Longmont Weather History Colorado, United States of America

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Past date: Past date must be from 1st Jan, 2009 onwards.

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Daily and hourly data from 1 Jan 2009 onwards.
Yearly Monthly Averages
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Fri 17 Oct, 2025 Weather in Longmont

Sunrise: 07:14 AM Sunset: 06:17 PM	Moonrise: 03:25 AM Moonset: 04:39 PM	Max: 16.6 °c	Min: 3.3 °c	Avg: 9.6 °c	Precip: 0.00 mm	Max Wind: 14.0 kph

	Fri 17 0:00 am	Fri 17 3:00 am	Fri 17 6:00 am	Fri 17 9:00 am	Fri 17 12:00 pm	Fri 17 3:00 pm	Fri 17 6:00 pm	Fri 17 9:00 pm
Icon
Temp	6.1°c	4.3°c	4.5°c	9.3°c	14.1°c	16.4°c	14.5°c	8.2°c
Wind	11.2 kmph	12.2 kmph	11.5 kmph	9.4 kmph	3.6 kmph	4.0 kmph	5.0 kmph	14.0 kmph
Precip	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm
Cloud	0%	0%	1%	0%	0%	3%	1%	0%
Humidity	56%	65%	73%	52%	33%	29%	34%	46%
Pressure	1012 mb	1013 mb	1015 mb	1014 mb	1012 mb	1010 mb	1010 mb	1013 mb

Longmont Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	4°C / 39°F	-7°C / 19°F	-2°C / 28°F	262 hours	18.95 mm / 0.75 In	5 days	1021 mb / 31 In
February	5°C / 40°F	-6°C / 20°F	-2°C / 29°F	233 hours	26.20 mm / 1.03 In	6 days	1018 mb / 31 In
March	11°C / 51°F	-2°C / 29°F	4°C / 39°F	253 hours	47.73 mm / 1.88 In	5 days	1015 mb / 30 In
April	15°C / 58°F	2°C / 35°F	8°C / 47°F	237 hours	68.88 mm / 2.71 In	7 days	1012 mb / 30 In
May	19°C / 66°F	7°C / 44°F	13°C / 55°F	235 hours	114.47 mm / 4.51 In	10 days	1012 mb / 30 In
June	27°C / 81°F	13°C / 56°F	20°C / 68°F	277 hours	54.49 mm / 2.15 In	7 days	1012 mb / 30 In
July	30°C / 86°F	16°C / 61°F	23°C / 74°F	287 hours	52.71 mm / 2.08 In	8 days	1015 mb / 30 In
August	30°C / 86°F	16°C / 60°F	22°C / 72°F	301 hours	31.05 mm / 1.22 In	7 days	1015 mb / 30 In
September	26°C / 79°F	12°C / 53°F	19°C / 65°F	295 hours	38.87 mm / 1.53 In	3 days	1015 mb / 30 In
October	17°C / 63°F	4°C / 39°F	10°C / 50°F	289 hours	37.40 mm / 1.47 In	4 days	1016 mb / 30 In
November	10°C / 51°F	-2°C / 28°F	3°C / 38°F	286 hours	25.42 mm / 1.00 In	4 days	1018 mb / 31 In
December	5°C / 40°F	-6°C / 21°F	-2°C / 29°F	272 hours	19.61 mm / 0.77 In	5 days	1019 mb / 31 In

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