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Pomona Weather by Month
Average temperatures, rainfall and humidity for Pomona, United States, month by month, built from OpenWeather’s historical records. Use it to see what a typical Pomona month looks like before you travel — then check the live Pomona forecast for the days ahead.
Warmest month
August
33°C average high
Coolest month
January
8°C average low
Wettest month
October
98 mm of rain
Driest month
June
3 mm of rain
Average temperature and rainfall in Pomona by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 19°C | 8°C | -9°C / 31°C | 55 mm | 56% | 8 km/h |
| February | 20°C | 9°C | -5°C / 34°C | 58 mm | 57% | 8 km/h |
| March | 22°C | 10°C | -21°C / 37°C | 40 mm | 61% | 10 km/h |
| April | 24°C | 11°C | -2°C / 36°C | 16 mm | 58% | 11 km/h |
| May | 25°C | 13°C | 3°C / 38°C | 19 mm | 64% | 11 km/h |
| June | 29°C | 16°C | 8°C / 44°C | 3 mm | 61% | 10 km/h |
| July | 32°C | 19°C | 10°C / 44°C | 5 mm | 56% | 10 km/h |
| August | 33°C | 19°C | 9°C / 41°C | 5 mm | 55% | 10 km/h |
| September | 31°C | 18°C | 6°C / 45°C | 9 mm | 56% | 9 km/h |
| October | 27°C | 14°C | 1°C / 39°C | 98 mm | 53% | 8 km/h |
| November | 23°C | 11°C | -4°C / 34°C | 22 mm | 50% | 8 km/h |
| December | 19°C | 9°C | -6°C / 30°C | 53 mm | 57% | 7 km/h |
Best time to visit Pomona
The most comfortable time to visit Pomona is generally April to May and November, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around October, totalling about 381 mm a year.
Travellers who prefer heat should aim for August, when highs average 33°C. October is the month to avoid if rain would spoil your plans — it averages 98 mm, roughly 37× the rainfall of the driest month (June).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Pomona forecast for what is happening now.
Weather across United States right now
- Atlanta20°C
- Austin27°C
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- Dallas29°C
- Denver17°C
- Detroit22°C
- Houston27°C
- Indianapolis23°C
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- San Diego28°C
- San Francisco19°C
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- Seattle13°C
- St. Louis25°C
- Tampa25°C
- Washington20°C
