Westmont Weather History

California, United States of America

Weather on a past date in Westmont

Any date from 1 January 2009 to yesterday.

Mon 12 Oct, 2026 Weather in Westmont

Sunrise: 06:55 AM
Sunset: 06:23 PM		Moonrise: 09:12 AM
Moonset: 07:27 PM		Max:
20.2 °c		Min:
16.6 °c		Avg:
18.6 °c		Precip:
2.50 mm		Max Wind:
15.1 kph
 
Mon 12
0:00 am
Mon 12
3:00 am
Mon 12
6:00 am
Mon 12
9:00 am
Mon 12
12:00 pm
Mon 12
3:00 pm
Mon 12
6:00 pm
Mon 12
9:00 pm
IconPatchy rain possiblePatchy rain possiblePatchy rain possiblePatchy rain possiblePatchy rain possiblePatchy rain possibleCloudyClear
Temp19.3°c17.6°c16.9°c17.9°c20.2°c20.2°c19.3°c17.7°c
Wind11.5 kmph8.3 kmph6.2 kmph7.6 kmph11.9 kmph15.1 kmph13.0 kmph7.7 kmph
Precip0.20 mm0.10 mm0.40 mm0.10 mm0.10 mm0.10 mm0.00 mm0.00 mm
Cloud100%100%100%76%87%70%71%2%
Humidity64%65%65%59%46%48%48%47%
Pressure1010 mb1010 mb1010 mb1012 mb1013 mb1012 mb1012 mb1013 mb

Westmont Annual Weather Averages

MonthHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
January19°C / 66°F10°C / 50°F14°C / 57°F273 hours66.27 mm / 2.61 In3 days1019 mb / 31 In
February19°C / 66°F10°C / 50°F14°C / 58°F237 hours72.93 mm / 2.87 In3 days1018 mb / 31 In
March20°C / 67°F11°C / 52°F15°C / 59°F265 hours55.78 mm / 2.20 In3 days1017 mb / 31 In
April21°C / 70°F13°C / 55°F17°C / 62°F279 hours16.26 mm / 0.64 In1 days1015 mb / 30 In
May22°C / 72°F14°C / 58°F18°C / 65°F297 hours6.08 mm / 0.24 In1 days1013 mb / 30 In
June25°C / 77°F16°C / 61°F20°C / 69°F302 hours1.43 mm / 0.06 In0 days1012 mb / 30 In
July27°C / 81°F18°C / 65°F23°C / 73°F328 hours2.17 mm / 0.09 In0 days1013 mb / 30 In
August29°C / 83°F19°C / 67°F24°C / 74°F330 hours4.79 mm / 0.19 In0 days1012 mb / 30 In
September28°C / 82°F19°C / 67°F23°C / 74°F303 hours8.28 mm / 0.33 In1 days1012 mb / 30 In
October25°C / 78°F17°C / 62°F21°C / 69°F293 hours11.38 mm / 0.45 In1 days1014 mb / 30 In
November22°C / 72°F13°C / 55°F17°C / 63°F283 hours33.36 mm / 1.31 In1 days1017 mb / 31 In
December18°C / 65°F10°C / 51°F14°C / 57°F262 hours80.68 mm / 3.18 In3 days1018 mb / 31 In

Need more than one day of Westmont history?

Download historical weather for Westmont, 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 Westmont

Region

California

See the Westmont 14-day forecast »

Hotels near Westmont

Westmont weather history: common questions

How far back does Westmont 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 Westmont 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.

Quick and Easy Signup for Weather API

WeatherAPI.com makes it super easy to integrate our realtime, daily, hourly and 15 min interval weather forecast data, historical weather, marine weather, bulk request, air quality data, pollen, evapotranspiration, autocomplete, time zone, astronomy and sports data into your new or existing project.
Get Started