Historical Weather in Pomona, CA
See 55+ years of weather history for any date in Pomona going back to 1970.
Part of California weather history · California temperature records
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Monthly Climate Averages
Historical temperature and precipitation averages for Pomona, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.
Pomona, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Pomona, CA Monthly Precipitation
Average rainfall per month, in inches.
Pomona, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Growing Season & Frost in Pomona, CA
Based on the dates the average overnight low reaches freezing (32°F / 0°C), from 50+ years of NOAA station data.
Pomona, CA also averages 46 days a year at or above 90°F.
Hours of Daylight in Pomona, CA
Day length across the year at 34.0°N latitude. Computed from solar geometry.
Best Time to Visit Pomona, CA
Pomona, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.
Pomona Temperature Records
- Record High: The hottest temperature ever recorded in Pomona, CA is 121°F, set on September 6, 2020.
- Record Low: The coldest temperature ever recorded in Pomona, CA is 19°F, set on March 12, 1986.
- Data Coverage: Based on 29 years of data from NOAA weather station: CLAREMONT CALIFORNIA.
All-Time Record High
All-Time Record Low
Monthly Temperature Records in Pomona
| Month | Record High | Record Low |
|---|---|---|
| January | 95°F(2003) | 20°F(2007) |
| February | 97°F(2016) | 23°F(1990) |
| March | 98°F(2015) | 19°F(1986) |
| April | 106°F(2004) | 28°F(1999) |
| May | 106°F(2004) | 32°F(1988) |
| June | 115°F(2016) | 36°F(1988) |
| July | 120°F(2018) | 46°F(2000) |
| August | 115°F(2017) | 45°F(2010) |
| September | 121°F(2020) | 42°F(1986) |
| October | 111°F(2020) | 33°F(2009) |
| November | 102°F(2010) | 27°F(2000) |
| December | 92°F(2021) | 20°F(1987) |