Boulder 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.
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Thu 13 Aug, 2026 Weather in Boulder

Sunrise: 06:10 AM Sunset: 08:00 PM	Moonrise: 06:56 AM Moonset: 08:33 PM	Max: 24.9 °c	Min: 13.3 °c	Avg: 18.1 °c	Precip: 14.89 mm	Max Wind: 10.8 kph

	Thu 13 0:00 am	Thu 13 3:00 am	Thu 13 6:00 am	Thu 13 9:00 am	Thu 13 12:00 pm	Thu 13 3:00 pm	Thu 13 6:00 pm	Thu 13 9:00 pm
Icon
Temp	16.0°c	14.3°c	14.1°c	20.6°c	23.4°c	21.7°c	20.0°c	16.6°c
Wind	10.8 kmph	4.3 kmph	5.4 kmph	5.0 kmph	6.5 kmph	9.7 kmph	4.3 kmph	2.5 kmph
Precip	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.20 mm	1.50 mm	3.20 mm	0.00 mm
Cloud	12%	26%	80%	75%	81%	53%	77%	74%
Humidity	60%	77%	82%	67%	53%	69%	67%	89%
Pressure	1010 mb	1011 mb	1013 mb	1013 mb	1011 mb	1011 mb	1011 mb	1014 mb

Boulder Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	3°C / 37°F	-8°C / 18°F	-3°C / 26°F	259 hours	23.59 mm / 0.93 In	5 days	1021 mb / 31 In
February	4°C / 39°F	-7°C / 19°F	-2°C / 28°F	230 hours	27.76 mm / 1.09 In	6 days	1018 mb / 31 In
March	9°C / 49°F	-2°C / 28°F	3°C / 37°F	250 hours	53.96 mm / 2.12 In	5 days	1015 mb / 30 In
April	13°C / 55°F	1°C / 33°F	7°C / 44°F	231 hours	77.35 mm / 3.05 In	7 days	1013 mb / 30 In
May	17°C / 63°F	5°C / 42°F	11°C / 52°F	209 hours	120.87 mm / 4.76 In	10 days	1013 mb / 30 In
June	25°C / 77°F	12°C / 54°F	19°C / 66°F	258 hours	60.33 mm / 2.38 In	8 days	1012 mb / 30 In
July	28°C / 82°F	15°C / 60°F	22°C / 71°F	267 hours	55.56 mm / 2.19 In	10 days	1015 mb / 30 In
August	27°C / 80°F	15°C / 59°F	21°C / 69°F	292 hours	37.27 mm / 1.47 In	7 days	1016 mb / 30 In
September	24°C / 74°F	11°C / 52°F	17°C / 63°F	293 hours	44.49 mm / 1.75 In	4 days	1016 mb / 30 In
October	15°C / 59°F	4°C / 39°F	9°C / 48°F	284 hours	39.56 mm / 1.56 In	4 days	1016 mb / 30 In
November	9°C / 48°F	-3°C / 27°F	2°C / 36°F	282 hours	28.57 mm / 1.12 In	4 days	1018 mb / 31 In
December	3°C / 38°F	-7°C / 19°F	-2°C / 28°F	275 hours	21.95 mm / 0.86 In	5 days	1019 mb / 31 In

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