Northwest St. Louis Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Northwest St. Louis Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	-19.11875	-19.9		-10.8875	-13.8
	-17.5875	-18.2		-10.225	-12.6
	-17.95625	-13.8		-9.13125	-8.2
	-17.65625	-16.3		-10.343750000000002	-9.1
	-18.162499999999998	-10.7		-11.0625	-4.1
	-18.51875	-5.3		-10.631250000000003	-2.1
	-17	-8.6		-9.59375	-1.5
	-17.63125	-4.2		-8.881250000000001	-2.9
	-17.075	-10.4		-8.825000000000003	-5.3
	-15.343750000000004	-9.1		-7.506250000000001	-6
	-16.3	-12.1		-8.337499999999999	-4
	-17.66875	-4.3		-9.875000000000002	-3.2
	-18.500000000000004	-4.8		-10.2625	1.6
	-17.31875	-17.4		-9.70625	-11.4
Jan.	-17.637500000000003	-16.9		-7.5	-6.8
	-16.88125	-15.9		-8.70625	-2.4
	-17.6	-22.7		-9.062499999999998	-15.5
	-17.9625	-21.8		-10.343749999999998	-16.4
	-19.55625	-28.3		-10.950000000000001	-20.3
	-20.13125	-25.2		-11.5875	-15.2
	-19.018749999999997	-17.6		-9.424999999999999	-11.4
	-16.4375	-29.1		-8.85625	-19.7
	-15.33125	-30.5		-7.943750000000001	-22.4
	-14.737499999999999	-27.3		-6.54375	-19.5
	-15.856249999999998	-24.8		-8.549999999999999	-18.1
	-15.63125	-25.5		-7.537499999999999	-15
	-16.4125	-20.5		-7.906249999999999	-15.7
	-16.762500000000003	-19.8		-9.281249999999998	-16.5
	-18.799999999999997	-19.3		-8.512500000000001	-15.5
	-17.56875	-23		-8.581249999999999	-13.2
	-17.075	-21.5		-8.518749999999999	-7.3
	-18.799999999999997	-12.1		-10.475000000000001	-8.2
	-18.537499999999998	-17.3		-9.8125	-11.2
	-19.012500000000003	-21.3		-9.731249999999998	-10.9
	-18.25625	-12.2		-9.83125	-7.7
	-17.6625	-8.2		-8.612499999999999	0.6
	-16.743750000000006	-14.9		-8.59375	-1.7
	-17.175	-18		-9.987499999999997	-9.2
	-18.674999999999997	-10.2		-9.90625	-0.8
	-19.375	-4.2		-10.225000000000001	-0.1
	-19.41875	-7.6		-10.137500000000001	-2.4
	-19.5375	-9.7		-8.181249999999999	-3.1
	-19.89375	-12.9		-9.39375	-0.7
	-19.025	-6.6		-8.43125	-1.9
	-17.175	-7.2		-7.9125000000000005	-3.9
Feb.	-16.799999999999997	-6.7		-7.324999999999999	-1.2
	-18.75625	-5.6		-9.10625	-0.6
	-17.5375	-5.6		-6.781250000000001	1.1
	-16.51875	-4.7		-7.0375	-3.9
	-17.45625	-8.4		-7.475	-6.3
	-14.45625	-10.7		-4.79375	-6.4
	-14.31875	-13.5		-5.418749999999999	-7.5
	-13.95625	-16.6		-5.25625	-11.6
	-13.431249999999997	-18.9		-4.418749999999999	-8.7
	-15.88125	-14.6		-5.575	-6.6
	-16.206249999999997	-19.2		-7.7375	-9.8
	-15.325000000000001	-14.8		-4.90625	1.1
	-14.812500000000002	-10.7		-5.35625	1.2
	-14.624999999999998	-19.5		-5.6937500000000005	-13.8
	-16.937499999999996	-20.5		-6.543750000000001	-10
	-16.3625	-9.9		-4.481250000000001	2.9
	-13.54375	-5.7		-3.581249999999999	2
	-11.7875	-5.7		-3.1375000000000006	0.1
	-11.425	-5.7		-2.83125	-1.2
	-10.36875	-6.1		-1.9687500000000004	-1.7
	-11.0875	-4.6		-0.80625	3.7
	-8.862500000000002	-0.1		0.006250000000000047	5.4
	-7.08125	-4.1		1.2062499999999998	4.7
	-9.3	-8.5		-0.8625000000000002	0.6
	-9.825000000000001	-3.6		-0.8687499999999999	1.8
	-8.83125	-8.2		0.8437500000000002	-0.1
	-6.35625	-7.6		2.1687500000000006	-4.8
	-6.187500000000001	-9.5		3.2812499999999996	0
Mar.	-6.187499999999998	-10		2.6999999999999997	-4.2
	-7.287499999999999	-17		2.175	-10.1
	-6.7562500000000005	-16.4		2.25625	-7.4
	-5.76875	-10.3		1.8750000000000002	4.7
	-6.331250000000001	1.6		3.00625	5.2
	-6.26875	0.7		2.9125	3.2
	-7.525	0.4		1.1375000000000002	1.4
	-8.587499999999999	-3		1.0624999999999998	0.3
	-6.91875	-5.2		2.05625	3.6
	-7.656249999999999	-3.1		1.86875	4
	-8.23125	1.3		1.7249999999999999	4.9
	-7.793749999999999	-5.7		0.90625	2.3
	-6.5625	-7.1		2.0624999999999996	-3.5
	-7.58125	-7.4		2.7312499999999997	4.8
	-6.0125	-5.6		4.45625	5.6
	-5.449999999999999	-2.6		4.5249999999999995	1.3
	-5.2749999999999995	-3.2		2.9375	0.7
	-5.6625	-8.6		4.643750000000001	4.8
	-4.2124999999999995	-4.1		4.975	1.2
	-4.45	-5.1		2.7750000000000004	5.5
	-4.9437500000000005	-5.5		4.2125	0.1
	-5.499999999999999	-8.4		4.51875	3.5
	-4.2250000000000005	-10.4		4.8125	-4.8
	-3.4937500000000004	-16.8		5.74375	3.7
	-2.88125	-1.6		6.925	4.5
	-2.3249999999999997	-1.6		6.3062499999999995	0.3
	-2.8125	-4.6		5.58125	5.4
	-2.5250000000000004	-5.8		7.5125	14.7
	-0.9187500000000001	3.6		7.55625	10.5
	-2.2062500000000007	2.5		6.406249999999999	4.8
	-2.8249999999999997	-0.4		7.45625	6.7
Apr.	-1.9499999999999997	2.1		6.66875	14.1
	-2.0625	2.1		6.950000000000001	20.9
	-2.4749999999999996	-1.8		7.781249999999999	9.8
	-2.25	-8.3		7.375000000000001	-1
	-1.80625	-5.8		7.55625	2.6
	-1.2000000000000002	-7.2		8.08125	15.7
	-1.5437499999999997	-1.6		7.874999999999998	14.7
	-1.38125	1.7		8.96875	22.7
	-0.7	9		9.600000000000001	17.2
	0.25625000000000003	2.3		9.21875	11.5
	-0.25625	-1.1		10.46875	13.3
	-0.4750000000000001	2.9		9.631250000000001	13.4
	-0.1687499999999999	3.7		10.525	5.5
	0.4625	2.3		11.162500000000001	6.3
	0.5750000000000002	0.4		11.249999999999998	4.2
	2.5812500000000003	-0.7		11.768750000000002	3.5
	2.35625	-4.2		10.231249999999998	10.1
	1.9250000000000005	-3.1		12.7	16.1
	2.2750000000000004	0.2		13.387499999999998	16.2
	2.7625	0.3		13.943750000000003	7.5
	2.9750000000000005	-1.5		13.7375	1.8
	3.3437500000000004	-0.7		14.887499999999998	3.1
	3.8000000000000007	-3.7		15.475000000000001	9.1
	3.9937500000000004	-1.5		13.412500000000001	12.8
	3.89375	1.9		13.88125	6.3
	2.96875	0.9		15.362500000000002	5.2
	4.025	-2.8		16.037499999999998	14.5
	4.668749999999999	3.9		15.106250000000001	8.9
	5.175	2.3		15.624999999999998	15.4
	5.525	3.9		17.4	23.3
May	5.475	11.5		18.4625	23.4
	5.60625	4.6		17.10625	8.9
	5.450000000000001	1.2		17.206249999999997	16.4
	5.24375	6.3		18	9.9
	6.481249999999999	3.2		18.4375	5.7
	6.64375	-1.4		19.512500000000003	15.3
	7.4624999999999995	4.8		17.6875	20
	6.99375	5.6		19.13125	20.2
	8.049999999999999	7.8		19.05625	13
	8.331249999999999	6.6		20.424999999999994	24.5
	9.5625	8.6		20.774999999999995	29.6
	8.69375	11.2		19.53125	27
	8.58125	13		20.581249999999997	25.7
	9.39375	11.1		21.18125	29.5
	9.737499999999999	13.2		21.73125	31.8
	10.350000000000001	15.6		19.543749999999996	28.6
	8.94375	13.1		20.45	28.7
	8.3375	9.8		19.725	28.6
	9.15625	10.2		20.8	28.9
	9.993749999999999	14.8		21.775000000000002	28.2
	11.2	16.4		22.237499999999997	24.6
	10.7	15.9		21.9	24.3
	10.925000000000002	10.5		22.756250000000005	26.9
	10.20625	14.6		21.65	28.5
	10.45	16.2		22.256249999999998	23.4
	10.487499999999999	14.7		21.918749999999996	30.3
	11.06875	17.1		22.68125	25.3
	11.131250000000001	12.8		21.812500000000007	21.6
	10.34375	12.3		20.618750000000002	17.6
	9.981250000000001	9.1		22.293749999999996	12.6
	10.900000000000002	7.8		22.393750000000004	19.1
Jun.	11.181249999999999	9.5		21.137500000000003	21.4
	12.200000000000001	10.3		22.168750000000003	21.6
	12.75625	12		23.312499999999996	16.6
	12.268749999999999	9		22.706249999999997	15.6
	12.231250000000001	6		23.131249999999998	15.6
	12.649999999999999	9.2		24.037499999999998	18.2
	12.237499999999999	6.9		23.787499999999998	19
	13.225	5.9		23.3	22.7
	12.749999999999998	7.9		23.406250000000004	22.6
	12.14375	12.8		22.850000000000005	20.1
	12.60625	8.6		23.062499999999996	25.9
	12.824999999999998	10.9		23.731250000000006	26.7
	13.181249999999999	13.1		23.856250000000003	26.8
	13.33125	14.6		23.893749999999997	24.7
	13.83125	17.6		24.718749999999996	24.1
	14.243749999999997	19		25.025000000000006	27.8
	13.462500000000002	16.9		24.281250000000004	27.2
	13.85	15.6		26.187500000000004	26.7
	15.04375	13.4		27.46875	27.2
	16.068749999999998	16.7		27.674999999999997	28.2
	16.375000000000004	15.1		26.481250000000003	29.2
	14.612499999999999	16		25.181250000000002	30.8
	14.631249999999998	15.9		24.599999999999998	26.3
	13.93125	15.6		24.3625	25.8
	14.281250000000002	11.6		25.3875	26.5
	14.806250000000004	12.9		26.55	29.9
	14.95625	15.4		25.681250000000002	32.1
	15.0125	22.6		25.325000000000003	35.2
	15.1	22.4		26.206249999999997	35
	15.481250000000001	22.8		25.1375	31.6
Jul.	15.362499999999999	19.1		24.8875	25.6
	15.406249999999998	14.9		24.856250000000006	27.2
	14.78125	16.9		26.08125	26.3
	15.612499999999999	16.9		26.606250000000003	26.8
	15.387499999999998	16.9		26.456249999999997	31.6
	14.825	19.5		25.349999999999998	27.4
	15.48125	12.8		25.893750000000004	18.6
	15.150000000000002	10.7		24.925	23.3
	15.137500000000001	15.1		25.356250000000006	27
	14.268749999999999	16.4		24.731250000000003	26.1
	14.831249999999999	18.5		25.83125	27.2
	15.74375	16.6		26.55	29.9
	15.756249999999998	18.8		24.6875	26.5
	15.5	14.1		24.99375	28.4
	14.4875	16.7		24.418749999999996	31.2
	14.206249999999997	20.1		25.56875	31.7
	14.893749999999999	17		26.35	26.7
	14.599999999999996	15.1		26.374999999999996	26.3
	15.581249999999999	14.4		26.381249999999998	27.5
	15.15625	17.4		24.99375	26.7
	14.468749999999998	13.9		25.337500000000002	21.5
	14.925000000000002	7.9		25.14375	25.5
	14.375000000000002	16.9		22.90625	27.7
	13.724999999999998	16.2		24.906249999999996	23.5
	14.38125	11.4		24.400000000000002	24.7
	14.743749999999997	13.6		24.856250000000003	24.2
	14.493749999999999	13.1		24.387500000000003	24.4
	14.075000000000001	14.1		24.5625	24.9
	14.20625	11.7		24.962500000000002	26.1
	14.45	11.1		24.400000000000002	26.4
	13.562499999999998	14		25.068749999999994	26.6
Aug.	14.631249999999998	15.6		26.38125	19.6
	14.624999999999998	13.4		24.34375	24.6
	13.762500000000001	11.7		23.75625	26.7
	13.26875		12.4	24.193749999999994		20.4
	14.575000000000001		11.1	24.60625		20.8
	14.24375		11.7	24.6125		25.7
	13.24375		15.8	23.18125		23.1
	13.756250000000001		12.4	24.562499999999996		18.8
	13.931250000000002		9	24.625000000000004		20
	14.175		10.8	23.299999999999994		14.7
	13.575000000000001		9.5	24.356250000000003		13.3
	12.887500000000001		12.7	22.95625		23.1
	13.143749999999999		12.9	23.38125		22.4
	13.600000000000001		13.2	23.525000000000002		23.7
	13.787499999999998		13.8	24.000000000000004		24
	13.73125		12.9	25.093749999999996		24.5
	13.80625		13.3	24.13125		23.6
	13.3625		12.8	23.45625		23.6
	12.343750000000002		12.5	22.481249999999996		22.8
	11.649999999999999		11.8	22.000000000000004		22.3
	11.66875		12	21.943749999999998		21.7
	11.125		10.6	19.831249999999997		19.5
	10.9375		11	21.14375		21.5
	10.106250000000001		9.7	19.812499999999996		19.6
	10.54375		10.8	20.525		21
	10.1		10.5	19.90625		20.7
	10.2875		10.7	20.14375		21
	10.68125		11.2	19.89375		20.8
	10.037500000000001		10.5	20.381249999999998		19.7
	10.643749999999999		10.4	19.893749999999997		19.7
	9.849999999999998		9.5	18.5		19.1
Sep.	9.28125		10.3	19.25		20.6
	11.143749999999999		11.3	21.24375		20.5
	10.25		10.1	18.00625		17.9
	9.69375			18.512500000000003
	10.231249999999998			20.431249999999995
	10.812499999999998			18.93125
	9.91875			17.743750000000002
	8.924999999999999			17.76875
	9.087500000000002			17.537499999999998
	9.181249999999999			17
	9.412500000000001			17.175
	8.9			18.418750000000003
	9.281249999999998			18.5625
	7.668749999999999			17.325
	7.94375			17
	8.624999999999998			17.7375
	8.568750000000001			16.631249999999998
	8.075			16.2125
	7.6625000000000005			16.481250000000003
	7.1187499999999995			15.656249999999996
	5.7875			14.6
	6.043749999999999			12.96875
	4.75			12.656250000000002
	5.3375			13.26875
	5.35625			12.543749999999998
	5.6499999999999995			14.14375
	5.800000000000001			15.38125
	5.44375			12.568750000000001
	3.3437500000000004			9.737499999999999
	2.5437499999999993			9.412500000000001
Oct.	2.44375			9.09375
	1.88125			9.4625
	1.8624999999999998			9.76875
	3.0375000000000005			11.18125
	3.3625			11.46875
	2.55			9.15625
	2.9812499999999997			9.19375
	2.7625			9.59375
	2.71875			9.1375
	2.075			8.25625
	1.8125000000000002			8.40625
	1.7312500000000002			7.475
	0.275			6.05625
	-0.02499999999999991			5.16875
	-0.11249999999999993			6.05625
	-0.36249999999999993			5.5875
	-1.1437499999999998			4.5062500000000005
	-1.2625			5.587500000000001
	-0.6499999999999999			5.625
	-0.2937499999999999			6.312500000000001
	-1.0374999999999999			6.0874999999999995
	-1.05			5.6312500000000005
	-1.2062499999999998			4.406250000000001
	-1.85625			3.7375000000000003
	-2.0687499999999996			4.7625
	-1.1624999999999996			4.0125
	-3.7624999999999993			3.1125
	-3.7187500000000004			1.09375
	-5.15625			0.4625000000000001
	-4.8999999999999995			0.9562499999999999
	-3.9187499999999993			2.5625
Nov.	-3.5124999999999997			2.0749999999999993
	-4.012499999999999			2.0500000000000003
	-4.71875			0.29999999999999993
	-5.331250000000001			-0.4249999999999998
	-6.7375			-0.09999999999999991
	-6.6375			-0.8812499999999999
	-8.075			-1.8062499999999997
	-7.274999999999999			-0.9375
	-5.79375			0.37499999999999983
	-6.143749999999999			0.05
	-7.34375			-1.8062499999999997
	-8.3375			-3.2249999999999996
	-8.96875			-4.531249999999999
	-8.46875			-2.6125000000000003
	-6.781249999999999			-1.61875
	-7.793750000000001			-3.075
	-9.025			-3.3625
	-9.08125			-2.3937500000000003
	-8.71875			-3.506249999999999
	-8.59375			-3.0187500000000003
	-10.4375			-4.69375
	-13.724999999999998			-6.8125
	-12.275			-5.4875
	-11.849999999999998			-4.25625
	-11.65625			-5.3500000000000005
	-12.725			-6.212500000000001
	-13.674999999999999			-7.3500000000000005
	-13.806250000000002			-7.68125
	-13.212500000000002			-6.91875
	-11.268749999999999			-5.168750000000001
Dec.	-12.5			-5.1000000000000005
	-12.51875			-5.03125
	-13.6875			-5.5375000000000005
	-14.9875			-7.8687499999999995
	-15.106250000000001			-7.450000000000001
	-15.08125			-6.36875
	-12.337499999999999			-6.374999999999999
	-12.7125			-6.0625
	-12.05			-5.75
	-13.31875			-5.675
	-14.08125			-8.51875
	-14.937499999999998			-7.393750000000001
	-13.568749999999998			-5.593749999999999
	-15.656250000000002			-7.49375
	-15.075000000000001			-8.149999999999999
	-16.975			-9.9125
	-18.36			-11.013333333333334

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

35°C

Highest Temp

12 Jul. 26

-30°C

Lowest Temp

23 Jan. 26

Seasonal Breakdown

Hottest MonthJuly28.17°C

Coldest MonthJanuary-17.57°C

Wettest MonthFebruary3.25mm

Windiest MonthApril18.14km/h

Northwest St. Louis Climate Change InsightsSee how climate patterns are evolving over time. Temperature shifts, rainfall trends, and extreme events—all in one place.

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Frequently Asked Questions

1. What is the hottest month in Northwest St. Louis historically?

July is historically Northwest St. Louis's hottest month, with average maximum temperatures around 26°C. During peak heatwave events, the highest recorded temperatures have reached 35°C on 2026-07-12.

2. What is the coldest month in Northwest St. Louis historically?

January is Northwest St. Louis's coldest month, with average minimum temperatures around -17°C. The all-time record low of -39°C was recorded on 2019-01-31.

3. What is the average annual rainfall in Northwest St. Louis over the past 17 years?

Northwest St. Louis's average annual rainfall is approximately 831.8mm, based on records spanning 17 years.

4. How many rainy days does Northwest St. Louis experience on average per year?

Northwest St. Louis historically records approximately 178.7 rainy days per year. August has the highest number of rain days at an average of 16.7 days.

5. What is the all-time highest temperature ever recorded in Northwest St. Louis?

The all-time highest temperature recorded in Northwest St. Louis is 35°C on 2026-07-12.

6. What is the all-time lowest temperature ever recorded in Northwest St. Louis?

The all-time lowest temperature recorded in Northwest St. Louis is -39°C on 2019-01-31.

7. What is the windiest time of year in Northwest St. Louis historically?

Northwest St. Louis experiences its strongest winds during October. The historic gust record of 39.6 kph was recorded on 2025-10-05.

8. What is the highest and lowest humidity in Northwest St. Louis during a year?

Usually, Northwest St. Louis's humidity peaks in January at around 91.4% and drops to its lowest in May at approximately 66.9%.

Recent Blogs On Weather

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Northwest St. Louis Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Northwest St. Louis Weather Trend Graph

Yearly Summary 2026

Seasonal Breakdown

Frequently Asked Questions

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Northwest St. Louis Historic Weather RecordsAnalyse hottest, coldest, windiest & wettest days

Northwest St. Louis Weather Trend Graph

Yearly Summary 2026

Seasonal Breakdown

Frequently Asked Questions

Recent Blogs On Weather

London's July 2026 Heatwave: From 20°C to 34°C in Weeks

World Top 10 Hottest Cities Are All in India Again - May 2026

Delhi Air Quality 2026 vs 6-Year Historical PM2.5 Data

What 17 Years of Delhi Temperature Data Reveal About May's Heatwave Escalation

World Top Hottest Cities Belong to India - April 2026

Construction Air Pollution: The Invisible Hazard Reshaping India's Urban Air

Kitchen Air Pollution: How Cooking Can Spike Your Indoor AQI

Mumbai Air Quality Comparison of 2025 Vs 2026 (Jan-Feb)

Why AQI Standards Vary Across the World - And Why Air Quality Index Matters More Than Ever

Why Winter Suffocates and Monsoon Saves Delhi Air Quality 2025?

Winter vs Summer Air: Why Air Pollution Behaves So Differently Across Seasons

Northwest St. Louis Historic Weather Records
Analyse hottest, coldest, windiest & wettest days