Longmont Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Longmont Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	-11.86875	-0.2		-1.025	7.8
	-11.181250000000002	2.7		2.54375	10.5
	-8.65625	-0.7		3.15625	12.6
	-8.8125	1.5		2.6062500000000006	13
	-9.1875	0.3		1.54375	13.3
	-9.7875	1.1		2.09375	11.3
	-8.01875	-0.6		1.9687499999999996	9.3
	-8.574999999999998	-0.9		3.7125000000000004	6.6
	-7.28125	-7.5		3.4624999999999995	0.3
	-7.668749999999999	-6.4		4.2437499999999995	5
	-8.375	-1.7		2.225	13.1
	-9.331250000000002	-3.4		2.50625	13.9
	-8.35	1.1		2.75	14.7
	-8.1375	-0.1		2.8187499999999996	12.4
Jan.	-8.925	1		2.71875	14.7
	-7.16875	-4.7		4.268750000000001	5
	-6.1	-8.4		5.71875	2.7
	-6.6000000000000005	-1.2		5.40625	9
	-6.5125	-8.7		4.062500000000001	6.4
	-7.4125	-6.2		3.762500000000001	12.2
	-7.425000000000001	-5.8		4.50625	8.6
	-6.5562499999999995	-10.6		4.1375	-2.3
	-7.1375	-10.3		4.66875	-6.1
	-6.775000000000001	-12.9		3.968749999999999	-7.6
	-6.2562500000000005	-15.3		4.093749999999998	-5.5
	-6.96875	-14.9		4.393749999999999	7.7
	-6.75	-6.8		4.468749999999999	7.8
	-7.231249999999999	-7.5		5.8687499999999995	7.3
	-6.325	-3.6		5.3	6.2
	-5.718750000000001	-5.8		6.287499999999999	5.9
	-6.4125	-4.3		5.29375	10.2
	-7.387499999999999	-1.9		2.78125	12.2
	-7.643749999999999	-0.3		4.45	10.3
	-7.5874999999999995	-2.3		4.825	8.2
	-8.4375	-1.3		2.69375	8.5
	-8.38125	-0.5		4.35	16.9
	-7.65	1		3.03125	13.9
	-7.950000000000001	0.8		4.71875	16.1
	-7.468749999999999	-0.2		4.59375	16.1
	-8.637500000000001	0.7		3.1999999999999997	13.8
	-8.1	0.1		2.5875000000000004	9.4
	-9.03125	-0.8		1.9937500000000001	15.3
	-8.825000000000001	0.2		2.3437500000000004	13.2
	-6.88125	-0.1		5.675000000000001	12.2
	-6.518750000000001	-0.1		5.550000000000001	13.4
Feb.	-7.175	-1.6		4.475	15.2
	-6.96875	0.2		5.1625000000000005	15.9
	-6.856249999999999	1.7		4.9624999999999995	11.3
	-7.0875	-0.5		5.18125	12
	-6.9375	-6.2		4.893750000000001	3.1
	-6.96875	-8.3		3.38125	-3.4
	-7.156250000000001	-10.1		3.8125	6.7
	-8.218749999999998	-7		3.1750000000000003	9.6
	-8.66875	-3.1		2.275	16.1
	-8.79375	1.9		3.79375	19.4
	-8.6125	3.9		3.5374999999999996	19.6
	-8.35625	2.1		5.19375	15.7
	-7.012499999999999	-0.7		6.575	17.2
	-5.787499999999999	0.8		6.899999999999999	17.6
	-5.843749999999998	1.5		7.281249999999999	15.8
	-5.068749999999999	5.3		8.0625	20.2
	-4.36875	1.3		9.112499999999999	9.2
	-5.59375	-2.3		7.01875	15.3
	-5.33125	-0.3		7.899999999999998	17
	-4.26875	-3.5		8.825000000000001	5.6
	-3.7249999999999996	-5.8		8.681249999999999	10.6
	-3.1249999999999996	-0.9		8.425	16.8
	-3.0187499999999994	3.7		9.856250000000003	21.2
	-3.7062499999999994	2.5		10.206250000000002	21.5
	-3.24375	-1.2		11.00625	11
	-2.2625	1		11.675	18.6
	-1.31875	6.2		11.643749999999999	19.4
	-1.01875	7.3		11.837499999999999	22.4
Mar.	-0.96875	-5.8		12.393750000000002	9.3
	-0.8250000000000001	-5.9		11.63125	11.5
	-1.3375000000000001	3.7		11.84375	21.5
	-2.0500000000000003	2.9		10.887499999999998	24.6
	-2.5812499999999994	4.1		10.368749999999999	26.8
	-3.318749999999999	6.6		11.275	27.8
	-2.6562500000000004	6.6		10.8625	31.4
	-1.2437500000000001	8.2		11.762500000000001	17.3
	-1.14375	4.2		11.762500000000001	21.3
	-2.0687499999999996	6.5		10.8875	23.7
	-2.8312500000000003	9.4		11.112499999999997	30.7
	-1.93125	6.1		11.8125	21.2
	-0.7875000000000002	3.2		12.18125	8.5
	-1	0		12.737499999999999	25.5
	0.012499999999999956	9.2		13.612499999999999	26.9
	0.14999999999999997	10.1		13.549999999999999	26.8
	0.80625	5.9		13.50625	14.4
	0.6687500000000002	2.7		13.575	12.9
	0.4000000000000001	2.9		14.300000000000002	23.1
	-0.5562500000000001	0.2		11.93125	15.4
	-1.3	-0.9		12.424999999999999	20.6
	-0.25000000000000006	-0.2		15.337500000000002	19.9
	0.5562499999999997	2.1		14.243749999999995	21.3
	0.6937499999999999	-1.6		15.749999999999998	23.1
	2.575	4		17.412499999999998	25.7
	1.7499999999999996	4		15.94375	24.9
	0.1875000000000001	2.7		14.475000000000001	17.7
	1.15	5.3		17.99375	25.1
	2.8312500000000003	3.5		17.206249999999997	25.3
	0.9375	5.9		13.699999999999998	22.5
	-0.09374999999999988	5.9		13.543750000000001	12.6
Apr.	0.44375000000000014	1.5		14.118750000000002	22.3
	1.25	5.6		13.518749999999999	24.7
	1.18125	-3.2		13.493749999999999	4.3
	0.3499999999999998	-3.5		13.9	14.8
	0.71875	0.1		13.650000000000002	22
	0.6187499999999999	4.8		12.9875	25.6
	1.55625	8.7		14.15625	27.7
	1.4312499999999997	9.4		14.99375	27.4
	2.4562500000000003	6.2		15.706250000000002	17.6
	2.55625	1.4		15.99375	21.7
	2.7	-3.8		16.625	13.1
	3.75625	-0.1		16.975000000000005	12.1
	3.95625	1.8		17.10625	13.3
	3.6374999999999997	3.2		17.25625	15.7
	2.6125	0.4		14.918750000000001	14.3
	2.4125	3.5		15.331249999999999	11.8
	3.01875	-0.1		15.3125	16.8
	2.91875	1.8		15.049999999999999	21.7
	2.5562499999999995	7.3		17.2625	23.8
	4.799999999999999	6.8		18.662499999999998	21.4
	5.0375	0.9		19.75625	3.6
	6.062499999999999	-2.3		20.675	5.3
	6.5874999999999995	-1.8		19.056250000000002	20.3
	5.39375	4.3		16.631249999999998	21.1
	4.39375	8.2		16.78125	25
	4.487500000000001	7.5		17.018749999999997	24.8
	4.54375	7.4		16.225	29.8
	3.9562500000000003	13.2		15.7375	30
	4.687500000000001	9.5		18.6875	31.3
	5.731249999999999	13.9		19.118749999999995	29.8
May	7.24375	10.6		19.306250000000002	29.1
	6.8625	10		20.662499999999998	25.1
	7.156249999999999	6.9		20.34375	18.7
	7.3625	1.5		17.98125	5.6
	6.7125	2.7		17.775000000000002	8.8
	5.8999999999999995	5.6		17.143749999999997	18.2
	6.099999999999999	4.6		19.10625	20.6
	6.7250000000000005	4.3		20.024999999999995	18.8
	7.268749999999999	4.1		20.5625	25
	7.212500000000001	9.4		20.28125	27.1
	6.7875000000000005	10.4		20.30625	28.1
	7.825000000000001	11.2		21.55	26.4
	8.881250000000001	11		22.73125	21.5
	9.25	9.9		22.0875	25.7
	8.950000000000001	11		22.04375	26.7
	8.799999999999999	9.6		22.48125	24.3
	8.9625	7.6		24.068749999999998	27.4
	9.581249999999999	10.8		23.843750000000007	26.1
	10.162500000000001	10.9		25.325	27.1
	11.093749999999998	10.8		24.731250000000003	28.4
	11.737500000000002	10.8		26.374999999999996	31.2
	12.49375	13.1		25.700000000000006	30.3
	12.49375	13.1		26.4	34
	12.2875	14.7		26.662499999999994	33.8
	12.456249999999999	12.4		25.975	27.5
	11.825	10.4		26.406250000000004	33.4
	12.75	10.5		28.143749999999997	31.1
	12.66875	8.7		25.78125	28.1
	12.387500000000001	7.8		26.000000000000004	33.7
	12.7375	11.7		27.8875	26.7
	13.15	12.6		28.4	24.5
Jun.	13.131250000000001	11.2		27.443749999999998	28.9
	13.381250000000001	8.2		29.087500000000002	34.3
	13.725	13.6		27.08125	36.1
	13.543750000000003	7.1		27.8125	31.3
	13.681249999999999	12.5		28.53125	29.3
	13.437500000000002	11.3		27.906249999999996	36
	13.512500000000001	10.8		27.450000000000003	33.3
	14.05	9.8		27.724999999999994	33.2
	13.075000000000003	11.9		27.025	31
	13.956250000000002	14		28.412499999999998	30.6
	14.137500000000001	14.1		28.79375	26.1
	14.731250000000003	10.9		29.64375	31.8
	14.925000000000002	14.4		30.262500000000003	34.5
	14.68125	13.2		30.968749999999996	32.1
	15.525000000000002	15.4		30.431250000000002	30.8
	14.900000000000002	11.5		28.018749999999997	32.3
	14.462499999999997	11.2		27.931250000000002	32.2
	14.8125	10.9		29.33125	32.2
	15.325	13.7		30.56875	34.2
	15.8875	13.8		30.362500000000004	33.7
	15.83125	13.9		29.656250000000004	36.2
	15.70625	15.6		29.050000000000008	36.5
	15.09375	16.4		28.893749999999997	35.8
	15.531250000000004	15		28.575	34.3
	15.312500000000002	15.1		30.599999999999998	33
	15.756250000000001	11.4		31.050000000000004	33.9
	16.03125	13.1		30.9125	36.9
	16.025	15.8		29.925000000000004	39.6
	16.212500000000002	16.9		31.21875	38.1
	16.793750000000003	17.7		30.85625	37.8
Jul.	15.912499999999998	14.8		29.581249999999997	35.6
	15.8	15.2		30.03125	34.7
	15.893749999999999	16.2		31.749999999999996	35.3
	17.275	16.3		32.06875	35.7
	17.25625	16.3		32.2125	37.2
	17.1625	18.4		30.775000000000002	39.4
	16.75625	20.5		31.3125	36.5
	16.537499999999998	19.3		31.312500000000004	34.3
	16.95625	19.2		31.6625	31
	16.775	17.4		30.75	36.5
	17.01875	18.6		31.125000000000007	39.5
	16.8	21.8		30.368750000000002	38.9
	16.28125	20.6		30.38125	32.9
	16.474999999999998	17.1		29.693750000000005	33.7
	16.60625	16.9		29.33125	32.7
	15.918749999999998	16.4		29.262500000000003	33.9
	15.9375	18.2		29.612499999999997	36.8
	16.068749999999998	15		30.687499999999996	37.6
	16.10625	16.6		30.868750000000002	38.9
	16.806249999999995	19.2		28.943749999999994	37.9
	16.08125	13		31.50625	25.8
	16.468749999999996	7.2		30.0125	31.7
	16.05	12.3		29.75625	36.8
	16.00625	13.5		29.706249999999997	38.2
	15.78125	15.8		29.39375	37.9
	15.34375	18.3		29.41875	37
	14.874999999999998	18.2		29.193749999999994	35.6
	15.33125	18.2		30.05625	36.2
	16.14375	16.4		30.58125	35.2
	15.318750000000001	14.6		29.54375	27.3
	15.693749999999996	13.3		29.7375	30.5
Aug.	15.293750000000001	16		30.862499999999997	30.4
	15.73125	12.9		29.900000000000002	31.5
	15.018749999999999		13.4	30.68125		36.9
	15.26875		16.7	31.21875		33.4
	15.243750000000002		16	29.525		34.4
	14.818750000000001		14.9	29.40625		34.6
	14.687499999999998		18	29.599999999999998		37.2
	15.3875		17.7	30.14375		35.9
	15.600000000000001		19.4	29.812499999999996		34.7
	15.0625		17.2	29.431250000000002		36.1
	15.406250000000004		15.2	28.98125		28.4
	15.674999999999997		15.5	28.537500000000005		29
	15.5		15.2	29.443750000000005		29.5
	15.18125		15.3	29.0125		28.6
	14.762500000000001		14.6	29.65		29.5
	15.11875		14.6	30.55		29.9
	15.000000000000004		14.6	29.8875		29.4
	14.062500000000002		14	29.606249999999996		29.9
	14.74375		15	29.575		29.8
	14.481250000000001		14.2	28.925		28.9
	13.787499999999998		14	29.49375		29.2
	14.225000000000001		13.9	27.831249999999997		27.6
	13.293750000000001		13.6	27.65		27.7
	13.687500000000002		13.2	28.362499999999997		27.9
	13.04375		12.1	28.418749999999996		27.3
	11.7625		11.8	26.875		26.2
	11.081249999999999		11.6	24.19375		25.2
	11.28125		11.9	24.606250000000003		24.8
	11.587500000000002		11.2	26.118750000000002		24.7
	11.687499999999998		11.1	27.025000000000002		26.5
	11.6375		11.8	25.331249999999997		26.2
Sep.	11.662500000000001		11.9	25.712500000000006		25.8
	11.475000000000001		11.6	26.66875		26
	11.700000000000001			25.543750000000003
	11.10625			25.65
	11.568750000000003			27.237500000000004
	11.425000000000002			26.168750000000003
	10.618749999999999			24.8125
	10.899999999999999			24.693749999999998
	10.474999999999998			22.8625
	9.68125			24.643749999999997
	9.91875			24.39375
	10.05625			26.03125
	10.91875			24.599999999999998
	10.10625			23.256249999999998
	9.83125			23.63125
	9.137500000000001			23.88125
	9.637500000000001			22.125
	8.56875			21.7
	8.1			22.70625
	7.68125			21.587500000000002
	7.043749999999998			19.96875
	6.95			18.825000000000003
	6.15			19.693749999999998
	5.9			19.6
	5.50625			18.981250000000003
	5.31875			17.7375
	5.40625			19.65
	5.5375000000000005			17.26875
	4.093749999999999			18.043749999999996
	4.1125			17.737499999999997
Oct.	3.65			19.037499999999998
	4.425			18.94375
	4.5			20.1
	5.4375			18.049999999999997
	4.1187499999999995			17.88125
	4.175			18.45625
	4.2125			18.3875
	5.231250000000001			18.93125
	4.71875			17.068749999999998
	4.062499999999999			16.187500000000004
	2.975			18.15
	2.3687500000000004			14.225
	-0.6937500000000001			10.10625
	-2.0187500000000007			11.500000000000002
	-0.3874999999999999			13.918750000000001
	-0.5062499999999999			11.306249999999999
	-1.29375			12.44375
	1.46875			14.51875
	0.725			14.200000000000001
	1.64375			13.7375
	0.8125			13.725
	1.36875			13.874999999999998
	0.27499999999999997			13.1625
	0.39999999999999986			12.7
	-0.5375			12.65625
	-0.4812500000000002			11.962499999999999
	-1.36875			11.600000000000001
	-3.6187500000000004			7.4
	-4.675			7.512499999999999
	-3.3812500000000005			10.59375
	-1.9187500000000002			11.556249999999997
Nov.	-1.7000000000000002			11.068750000000001
	-1.6687499999999995			11.9125
	-2.6562499999999996			9.631250000000001
	-3.0250000000000004			10.375
	-2.1499999999999995			10.48125
	-1.7437500000000001			9.63125
	-3.35			8.787500000000001
	-2.53125			10.6625
	-1.79375			10.293750000000001
	-3.11875			8.200000000000001
	-4.3500000000000005			6.9
	-4.799999999999999			8.04375
	-3.9562500000000003			8.2
	-3.8249999999999997			7.4625
	-5.43125			6.01875
	-5.875			4.9625
	-5.249999999999999			6.956249999999999
	-4.6625000000000005			7.68125
	-4.65			6.1875
	-5.5687500000000005			5.6625
	-6.487499999999999			5.862500000000001
	-6.1875			5.275000000000001
	-5.2875			6.2375
	-4.58125			6.5687500000000005
	-5.1625000000000005			6.024999999999999
	-5.425			7.23125
	-4.806250000000001			6.9875
	-4.0375000000000005			6.893749999999999
	-4.074999999999999			6.2124999999999995
	-4.35			5.56875
Dec.	-5.0625			4.6625
	-5.925000000000002			4.79375
	-7.00625			3.85625
	-6.53125			5.862500000000001
	-5.368750000000001			5.84375
	-5.6187499999999995			6.518750000000001
	-5.725			7.09375
	-6.0625			4.7875
	-6.23125			4.88125
	-5.956250000000001			4.65625
	-6.443749999999998			4.6625
	-7.006249999999999			2.3812499999999996
	-8.887500000000001			3.4375
	-7.83125			2.75625
	-8.33125			2.4375
	-10.100000000000003			2.125
	-11.086666666666668			0.7200000000000001

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

40°C

Highest Temp

12 Jul. 26

-15°C

Lowest Temp

25 Jan. 26

Seasonal Breakdown

Hottest MonthJuly35.45°C

Coldest MonthJanuary-4.54°C

Wettest MonthMay3.45mm

Windiest MonthJune28.96km/h

Longmont 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 Longmont historically?

July is historically Longmont's hottest month, with average maximum temperatures around 31°C. During peak heatwave events, the highest recorded temperatures have reached 40°C on 2026-07-12.

2. What is the coldest month in Longmont historically?

January is Longmont's coldest month, with average minimum temperatures around -7°C. The all-time record low of -28°C was recorded on 2024-01-16.

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

Longmont's average annual rainfall is approximately 497.1mm, based on records spanning 17 years.

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

Longmont historically records approximately 141.2 rainy days per year. May has the highest number of rain days at an average of 19.2 days.

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

The all-time highest temperature recorded in Longmont is 40°C on 2026-07-12.

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

The all-time lowest temperature recorded in Longmont is -28°C on 2024-01-16.

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

Longmont experiences its strongest winds during April. The historic gust record of 69.1 kph was recorded on 2024-04-06.

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

Usually, Longmont's humidity peaks in February at around 64.5% and drops to its lowest in September at approximately 40.5%.

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Longmont Historic Weather RecordsAnalyse hottest, coldest, windiest & wettest days

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Yearly Summary 2026

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Frequently Asked Questions

Recent Blogs On Weather

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

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Longmont Historic Weather Records
Analyse hottest, coldest, windiest & wettest days