Boulder Weather History

Colorado, United States of America

Weather on a past date in Boulder

Any date from 1 January 2009 to yesterday.

Thu 12 Nov, 2026 Weather in Boulder

Sunrise: 06:42 AM
Sunset: 04:47 PM		Moonrise: 10:29 AM
Moonset: 07:21 PM		Max:
18.2 °c		Min:
4.4 °c		Avg:
9.8 °c		Precip:
0.00 mm		Max Wind:
10.8 kph
 
Thu 12
0:00 am
Thu 12
3:00 am
Thu 12
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Thu 12
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Thu 12
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IconClearClearClearSunnySunnySunnyClearClear
Temp4.9°c5.1°c5.1°c12.7°c18.1°c17.0°c11.1°c6.1°c
Wind8.6 kmph9.7 kmph9.7 kmph3.6 kmph10.8 kmph6.8 kmph4.3 kmph8.3 kmph
Precip0.00 mm0.00 mm0.00 mm0.00 mm0.00 mm0.00 mm0.00 mm0.00 mm
Cloud0%0%0%1%2%1%0%3%
Humidity57%53%47%32%21%23%43%53%
Pressure1021 mb1020 mb1020 mb1019 mb1016 mb1015 mb1015 mb1015 mb

Boulder Annual Weather Averages

MonthHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
January3°C / 37°F-8°C / 18°F-3°C / 26°F256 hours23.59 mm / 0.93 In5 days1021 mb / 31 In
February4°C / 39°F-7°C / 19°F-2°C / 28°F229 hours27.76 mm / 1.09 In6 days1018 mb / 31 In
March9°C / 49°F-2°C / 28°F3°C / 37°F251 hours53.96 mm / 2.12 In5 days1015 mb / 30 In
April13°C / 55°F1°C / 33°F7°C / 44°F234 hours76.71 mm / 3.02 In8 days1013 mb / 30 In
May17°C / 63°F5°C / 42°F11°C / 52°F224 hours120.87 mm / 4.76 In11 days1013 mb / 30 In
June25°C / 77°F12°C / 54°F19°C / 66°F278 hours60.33 mm / 2.38 In9 days1012 mb / 30 In
July28°C / 82°F15°C / 60°F22°C / 71°F286 hours55.49 mm / 2.18 In10 days1015 mb / 30 In
August27°C / 81°F15°C / 59°F21°C / 69°F289 hours37.58 mm / 1.48 In8 days1016 mb / 30 In
September24°C / 75°F11°C / 52°F17°C / 63°F284 hours43.17 mm / 1.70 In5 days1016 mb / 30 In
October15°C / 60°F4°C / 39°F9°C / 48°F279 hours38.86 mm / 1.53 In4 days1016 mb / 30 In
November9°C / 48°F-3°C / 27°F2°C / 36°F282 hours28.57 mm / 1.12 In4 days1018 mb / 31 In
December3°C / 38°F-7°C / 19°F-2°C / 28°F275 hours21.95 mm / 0.86 In5 days1019 mb / 31 In

Need more than one day of Boulder history?

Download historical weather for Boulder, or any other location, in CSV from January 2009 onwards. Ideal for research, insurance, energy, agriculture and machine-learning projects.

  • Historical weatherDaily and hourly interval data.
  • Yearly monthly averagesMonthly averages for every year since 2009.
  • Monthly climate averagesLong-term climate normals by month.
  • CSV formatReady for Excel, Python, R or your database.
Buy historical weather data Or use the History API

Weather history near Boulder

Region

Colorado

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Boulder weather history: common questions

How far back does Boulder weather history go?

Hourly historical weather is available from 1 January 2009. Choose a date above, or pick a month at the top of the page for long-term averages.

Can I download Boulder historical weather as a file?

Yes. Buy historical weather data as daily or hourly CSV, yearly monthly averages or monthly climate averages. A free sample download is available.

Is there an API for historical weather?

Yes. The WeatherAPI.com History API returns hourly weather for any past date from 2010, as JSON or XML. Get a free API key.

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