Granite City Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Granite City Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	-3.40625	-1.9		4.20625	1
	-3.5875	-0.8		2.4062500000000004	3.1
	-4.29375	-1		3.4625	3.7
	-4.531250000000001	-0.4		2.24375	4.4
	-5.1000000000000005	-0.6		2.8	11.1
	-5.362500000000001	4.2		1.06875	12.2
	-5.9875	3.2		2.2874999999999996	9.2
	-4.8812500000000005	4.8		2.0062499999999996	15.7
	-4.868749999999999	5.7		3.40625	16.8
	-2.68125	3.1		5.15625	9.2
	-2.3187500000000005	-1.9		6.825000000000001	5.7
	-4.7625	-0.5		4.53125	9.3
	-6.01875	4.2		1.38125	14.6
	-4.89375	-1		2.30625	7.6
Jan.	-4.825	-5.8		1.98125	1.7
	-3.80625	0.2		3.3875000000000006	5.4
	-3.55	-7.4		4.38125	1
	-3.7812499999999996	-10.6		4.99375	0.4
	-5.05	-10.1		3.375	-3.8
	-5.43125	-10.7		1.5937499999999998	4.7
	-5.2437499999999995	-2.4		2.325	6.2
	-4.3875	-3.9		3.7	0.2
	-3.8625000000000007	-12.7		3.0374999999999996	0.6
	-3.78125	-13.3		4.575	-10.8
	-2.84375	-11.7		4.3125	-7.6
	-2.8875	-18		3.79375	-7.2
	-3.43125	-12.4		4.20625	0.4
	-2.7375	-14.2		5.14375	-0.2
	-2.85	-6.6		5.15	-3.6
	-2.8499999999999996	-12.2		4.63125	-5.9
	-1.9812499999999995	-13.9		6.2875	-4.7
	-1.98125	-11.4		5.856249999999999	-1.5
	-2.7749999999999995	-4.9		5.98125	1.2
	-2.9375	-2.4		6.00625	0.2
	-3.44375	-6.6		5.756249999999999	-2.3
	-4.106249999999999	-6		3.8375	2.3
	-3.5375	0.4		5.2125	3
	-3.43125	-3.9		5.43125	-0.1
	-3.3312500000000007	-2.2		3.8312500000000003	2.5
	-4.15625	-0.8		3.36875	3.6
	-4.7875000000000005	1.8		2.85	6.1
	-4.362500000000001	-1.7		3.4750000000000005	8.4
	-5.0874999999999995	2.2		2.9562500000000003	5.9
	-5.1375	1.8		4.550000000000001	14.2
	-3.8812499999999996	3.7		5.1875	7.2
Feb.	-2.81875	6.7		5.35625	9.3
	-2.73125	5.7		4.975000000000001	10.4
	-3.60625	4		5.643749999999999	11.3
	-3.04375	11		6.374999999999998	18.5
	-2.4125	10.3		6.100000000000001	20.8
	-1.5750000000000002	1.9		10.106250000000001	12.3
	0.04999999999999993	-0.8		8.699999999999998	7.4
	-0.03125	-4.7		9.94375	2.2
	-0.3000000000000001	-7.4		8.7625	1.6
	-1.3062499999999997	-3.8		7.35625	6.2
	-1.8187500000000008	1		6.393750000000001	7.1
	-2.0875000000000004	1.8		8.462499999999999	10.6
	-0.13124999999999992	3.9		10.299999999999999	18.1
	0.29374999999999984	4.7		11.2125	15.1
	0.37499999999999994	0.1		10.206249999999997	10.2
	-1.1125000000000003	1.1		8.94375	3.4
	-1.1125	2.6		8.74375	9.9
	0.43124999999999947	6.4		10.59375	19.2
	1.1312499999999999	9.1		9.64375	14
	0.5125	13.4		11.206249999999999	24.2
	1.5	9.3		12.031249999999998	19.9
	2.8812500000000005	3.3		12.34375	18.1
	4.26875	5.8		14.275000000000002	18.7
	4.987499999999999	16.5		12.68125	25.4
	2.6937500000000005	5.4		12.318750000000001	19.9
	2.325	-0.5		12.2625	12.2
	4.24375	4.9		12.96875	14.5
	5.3	1.4		13.681250000000002	16.4
Mar.	5.35625	6.2		15.70625	15.1
	4.7375	-5.5		14.800000000000002	0.7
	4.80625	-6.7		14.350000000000001	3.3
	4.2124999999999995	1.4		13.174999999999997	17
	3.4624999999999995	6.8		12.700000000000005	25.4
	3.7624999999999997	12.5		15.087500000000002	27.2
	5.2375	9.2		14.756250000000003	22.6
	5.16875	9.7		13.725	26.5
	5.13125	2.9		14.825000000000001	10.9
	5.39375	2.8		12.843750000000004	14.9
	4.275	8.3		12.924999999999999	22.2
	3.7187499999999996	16.1		12.731250000000001	31.5
	4.324999999999999	7.3		13.90625	19
	5.225	0.6		14.268749999999997	13.6
	6.50625	4.9		16.19375	17.7
	6.374999999999999	11.8		17.375	25.1
	7.03125	16		15.706249999999997	29.4
	4.93125	10.4		15.168750000000001	14.9
	6.49375	13.5		17.26875	25.6
	7.531249999999999	16.9		18.962500000000002	29.1
	7.54375	6.2		17.762499999999996	18.2
	6.65625	4.5		16.28125	18.7
	6.8812500000000005	4.7		16.093750000000004	21.2
	7.2125	5.8		17.16875	16.2
	8.025	5.6		17.631249999999998	27.4
	8.606250000000001	14.9		20.212500000000002	30.1
	8.8625	13.1		19.349999999999998	22.5
	8.13125	9.6		18.54375	26
	8.300000000000002	15.6		18.656250000000004	30.2
	9.175	20.5		19.91875	30.7
	8.368750000000002	21.1		18.5625	34
Apr.	8.3625	21.3		18.40625	29.2
	8.3875	15.3		17.443749999999998	29.7
	8.89375	17.1		19.38125	32.5
	9.03125	7.8		20.0125	16.5
	8.25	4.2		19.33125	21.5
	8.15625	6.6		18.21875	20.4
	8.149999999999999	11		18.11875	30
	8.693750000000001	15.6		18.15	27.5
	8.975	14.5		18.931249999999995	29
	9.662500000000001	16.2		18.493750000000002	24.5
	9.6	12.3		20.05	28.4
	9.94375	11.7		19.69375	29.8
	10.1	16.5		19.51875	27.5
	10.343749999999998	12.7		19.687499999999996	17.5
	11.500000000000002	10.3		22.012500000000003	19
	12.431250000000002	5.8		21.050000000000004	20
	11.8875	7.1		21	18.6
	11.36875	8.4		21.150000000000006	16.1
	12.225	5.6		20.487500000000004	27.3
	11.174999999999999	14.8		19.96875	30.7
	11.75	9.2		21.7625	14.3
	12.181249999999999	8.2		22.025	15.6
	13.249999999999998	4.7		24.381250000000005	22.1
	14.024999999999999	9.5		23.962500000000002	27.7
	13.575	12.2		23.28125	28.7
	13.456249999999999	13.2		23.024999999999995	24.9
	13.71875	7.3		22.356250000000003	27.7
	13.8	11.3		22.574999999999996	30.9
	13.012500000000001	15		23.0625	26.5
	13.299999999999999	8		22.812499999999996	26
May	13.749999999999998	14.7		22.568749999999998	32
	13.912500000000001	19.4		23.381249999999998	32.4
	14.674999999999999	19.1		22.949999999999996	32.8
	14.618749999999997	19.1		23.3125	31.9
	14.14375	17.2		24.05625	28.8
	15.381250000000001	13.3		24.624999999999993	17
	15.525	11.5		24.593749999999996	22.4
	14.63125	15.6		24.70625	21.1
	15.4375	17.5		25.293749999999996	25.1
	16.087500000000002	17.8		26.4	27.4
	17.40625	13.2		26.44375	31.4
	17.018749999999997	16.2		25.756249999999998	30.3
	17.85625	18.5		27.11875	31.1
	17.799999999999997	18.5		26.65625	33.9
	18.35	18.6		27.0375	32.7
	17.456249999999997	19.8		27.075	31
	17.6	18.5		26.88124999999999	32.5
	16.968749999999996	20		26.13125	30.2
	17.59375	17.2		26.049999999999994	30.6
	17.312500000000004	12.9		27.825	31
	18.343749999999996	15		28.425	32.4
	19.074999999999996	20.6		28.80625	32.3
	18.599999999999998	22.8		27.668750000000003	32.7
	18.393749999999997	23.3		27.456250000000004	34.1
	17.706249999999997	23		27.46875	28.6
	18.175	23.5		28.499999999999996	36.8
	18.64375	25.4		28.831249999999997	37.6
	18.987499999999997	22.1		28.60625	35.9
	19.406249999999996	19.7		28.699999999999996	32.4
	19.30625	18.9		28.712500000000002	27.6
	19.50625	18		29.9875	28.8
Jun.	19.912500000000005	13.9		30.20625	29.4
	20.39375	14.9		30.306250000000002	29.6
	21.05	17.2		30.787500000000005	36.5
	21.2375	19.4		30.025000000000002	30.8
	20.7375	16		30.450000000000003	32.8
	20.787499999999998	19.2		31.174999999999994	31.8
	21.4125	20.4		31.462500000000002	30.9
	21.34375	16.7		30.493750000000002	22.8
	21.093749999999996	14.8		30.212500000000002	31.2
	20.5875	15.7		29.7875	31.8
	20.75	20.7		31.362499999999997	32.5
	21.44375	20.6		30.818749999999998	26.5
	20.768749999999994	21.9		30.40625	30.4
	20.65625	23.2		30.493750000000002	36.7
	21.03125	24.2		30.724999999999998	38.2
	21.362499999999997	24.4		30.8625	39.9
	20.83125	24.3		30.0125	39.2
	19.85	24		28.318749999999998	39.7
	19.637499999999996	25.2		30.1125	37.8
	20.668749999999996	25.3		30.99375	37
	21.749999999999996	20.4		31.43125	30.7
	22.0375	21.1		31.33749999999999	33
	21.75	21.5		30.66875	32.9
	21.437499999999996	22.6		30.50625	33.9
	21.462499999999995	23.2		30.13125	35.3
	21.25	22.3		30.724999999999998	36
	21.1875	21.3		31.306250000000002	27.8
	21.974999999999994	20.6		31.90625	34.1
	21.949999999999996	19.9		31.43125	34.7
	21.84375	20.3		31.462500000000002	36.5
Jul.	21.85625	21.5		30.575000000000003	36.3
	21.762500000000003	23.5		31.73125	33.4
	21.9375	23.4		31.018749999999994	35.8
	21.9	24.1		31.206249999999994	36.1
	22.15625	25.6		32.375	32.6
	23.062499999999996	23.2		32.9375	38
	22.3375	25.8		31.25	38.9
	21.825000000000003	19.3		31.487500000000004	29.6
	22.45	17.9		32.025	29.9
	21.9375	16.9		31.943750000000005	29.9
	22.150000000000002	21		31.581250000000004	35.2
	22.462500000000002	24.7		31.85	41.3
	22.443749999999998	25.7		31.4375	40.6
	21.85	25.5		31.331250000000004	38
	21.287499999999998	20.4		30.462499999999995	34.5
	20.443749999999998	19		29.531250000000004	35.2
	20.325	21.6		28.918750000000006	28.1
	20.275	19.7		30.875	24.3
	20.45	19.8		30.387500000000003	30
	21.1875	18.1		31.043749999999996	32.3
	20.656249999999996	18.8		29.7875	32.7
	20.900000000000002	19.7		30.150000000000002	36
	21.11875	20.9		30.35	28.2
	20.743750000000002	20.1		29.937499999999996	34.4
	20.868749999999995	21.8		30.187500000000004	36.2
	21.031250000000004	22.6		30.275000000000002	37.8
	20.85625	25.3		30.15625	39.4
	20.818749999999998	25.8		30.48125	39.9
	20.725	26		30.374999999999996	37.9
	20.55	24.4		29.55625	39.9
	19.887500000000003	25.9		28.58125	38.4
Aug.	19.187499999999996	26.7		28.006249999999994	38.9
	19.75625	24		28.768749999999994	32.5
	20.19375	22.4		29.6875	29.8
	20.05		19.1	30.03125		33.3
	19.956249999999997		19.3	29.95		30.4
	20.4375		20.5	29.9625		27
	20.181249999999995		18.3	29.368750000000002		29.5
	19.90625		20.9	28.900000000000006		32.1
	18.975		21.8	29.768749999999997		31.2
	19.425		19	30.156249999999996		28.2
	20.450000000000003		18.5	31.031249999999996		28.6
	20.23125		20.1	30.63125		30.7
	20.50625		20.5	30.825000000000003		30.8
	20.5625		20.6	30.7		30.4
	21.06875		20.6	30.893750000000004		30.6
	20.462500000000002		19.8	29.8125		29.2
	20.018749999999997		19.8	30.350000000000005		29.2
	20.2375		19.4	29.174999999999997		28.8
	19.7		18.9	29.10625		28.9
	19.406249999999996		19.1	28.843749999999996		29.1
	19.474999999999998		19	28.599999999999998		28.8
	18.193749999999998		18.5	27.793749999999996		27.7
	18.325000000000003		18.5	28.256249999999998		28.3
	17.9625		17.6	28.349999999999998		27.9
	17.18125		16.6	27.518749999999997		26.8
	16.862499999999997		16.9	26.49375		26.9
	17.275		16.8	27.55		27.5
	16.9		17	27.16875		27.6
	16.50625		16.8	27.062499999999996		26.9
	16.25625		16.2	27.243750000000002		27.1
	16.206250000000004		16	27.756249999999998		27.4
Sep.	16.5		16.7	27.406250000000004		27.5
	17.33125		17.5	27.05		27.3
	17.58125		17.6	26.8125		26.6
	18.118750000000002			28.243750000000002
	18.10625			28.07500000000001
	17.61875			28.487499999999997
	17.5			26.85
	16.30625			25.95
	15.287499999999998			25.26875
	15.46875			25.59375
	15.768749999999997			25.437500000000004
	15.525			25.44375
	15.750000000000002			25.568750000000005
	15.225			25.631249999999998
	14.69375			25.1
	15.106249999999998			24.6
	14.65			24.95
	15.1125			24.25
	13.756250000000001			23.118750000000002
	13.143750000000002			22.81875
	13.131250000000001			24.368749999999995
	13.85625			23.181249999999995
	13.412500000000001			22.856250000000003
	12.143749999999997			23.362499999999997
	12.125000000000002			23.687500000000004
	12.43125			23.887499999999996
	12.568750000000003			22.481250000000003
	12.081249999999999			21.637500000000003
	12.256250000000001			21.40625
	11.4375			21.099999999999998
Oct.	10.562499999999998			19.831249999999997
	9.212499999999999			19.3125
	8.925			18.750000000000004
	9			19.35625
	8.5375			18.1375
	8.7375			19.4375
	9.518749999999999			19.343749999999996
	9.06875			20.13125
	10.706250000000002			20.837500000000002
	11.231250000000001			19.61875
	10.031250000000002			18.45
	9.431249999999999			18.150000000000002
	8.362499999999999			16.7375
	7.081249999999999			13.931249999999999
	5.681249999999999			14.631250000000001
	7.837499999999999			15.674999999999999
	6.512500000000001			14.081249999999999
	5.1187499999999995			14.262500000000001
	5.981249999999999			15.9
	6.299999999999999			16.375
	8.51875			16.41875
	7.456249999999999			16.343750000000004
	7.4			15.687500000000002
	6.2875			15.025
	6.1312500000000005			14.893750000000002
	5.2625			15.168750000000001
	6.0562499999999995			14.700000000000001
	4.225			15.54375
	2.60625			10.537499999999998
	1.6124999999999996			10.36875
	2.16875			11.73125
Nov.	3.3625			12.03125
	3.38125			11.424999999999999
	3.525			13.018749999999999
	3.1375			10.743749999999999
	2.5375			11.318750000000001
	3.2812500000000004			11.30625
	3.6625			12.056249999999999
	2.4812499999999997			10.387500000000003
	2.5000000000000004			10.193750000000001
	2.71875			11.881250000000001
	2.05			11.081249999999999
	1.60625			10.11875
	0.06874999999999998			7.95625
	0.3125			7.1
	1.7812500000000004			9.468749999999998
	1.5749999999999997			9.674999999999999
	1.2187500000000002			8.34375
	1.05625			8.750000000000002
	1.2625000000000002			9.281250000000002
	1.7			8.95
	0.45625000000000004			8.125
	-1.01875			5.78125
	-1.8250000000000002			4.649999999999999
	-1.6653345369377348e-16			7.275000000000001
	-0.22499999999999995			6.9624999999999995
	-0.23125000000000007			7.449999999999999
	-1.6437500000000005			7.75
	-0.7750000000000004			6.9375
	-0.16874999999999996			7.668749999999998
	-0.19999999999999984			7.475000000000001
Dec.	0.38125000000000003			6.968749999999999
	0.18749999999999978			6.762499999999999
	-0.5437499999999998			5.581250000000001
	-2.41875			5.2375
	-1.325			6.2875000000000005
	-0.38750000000000007			7.46875
	-0.25625000000000003			7.812500000000002
	-1.0187500000000003			6.79375
	-0.7250000000000004			6.862500000000002
	0.018750000000000044			7.231250000000001
	0.0625			7.13125
	0.043749999999999956			7.225
	0.15625			7.268749999999999
	-0.90625			6.71875
	-0.6562500000000003			6.05
	-1.525			4.706250000000001
	-1.1066666666666665			5.893333333333334

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

41°C

Highest Temp

26 Jul. 26

-18°C

Lowest Temp

26 Jan. 26

Seasonal Breakdown

Hottest MonthJuly34.9°C

Coldest MonthJanuary-4.79°C

Wettest MonthAugust7.34mm

Windiest MonthMarch24.61km/h

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

Weather City Ranking GloballyExplore Real time of the world’s hottest & Coldest Cities based on current temperature data.

Frequently Asked Questions

1. What is the hottest month in Granite City historically?

July is historically Granite City's hottest month, with average maximum temperatures around 31°C. During peak heatwave events, the highest recorded temperatures have reached 41°C on 2026-07-26.

2. What is the coldest month in Granite City historically?

January is Granite City's coldest month, with average minimum temperatures around -4°C. The all-time record low of -22°C was recorded on 2014-01-07.

3. What is the average annual rainfall in Granite City over the past 17 years?

Granite City's average annual rainfall is approximately 1395.9mm, based on records spanning 17 years.

4. How many rainy days does Granite City experience on average per year?

Granite City historically records approximately 167.1 rainy days per year. May has the highest number of rain days at an average of 18.8 days.

5. What is the all-time highest temperature ever recorded in Granite City?

The all-time highest temperature recorded in Granite City is 41°C on 2026-07-26.

6. What is the all-time lowest temperature ever recorded in Granite City?

The all-time lowest temperature recorded in Granite City is -22°C on 2014-01-07.

7. What is the windiest time of year in Granite City historically?

Granite City experiences its strongest winds during March. The historic gust record of 48.8 kph was recorded on 2012-12-20.

8. What is the highest and lowest humidity in Granite City during a year?

Usually, Granite City's humidity peaks in May at around 76.08% and drops to its lowest in October at approximately 65.6%.

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Granite City Historic Weather Records
Analyse hottest, coldest, windiest & wettest days