Pomona weather by month
Average highs run from 68°F in January to 90°F in July, and January nights average 43°F. It gets 14 inches of rain and melted snow a year, with almost no snow. Expect about 70 days a year at 90°F or hotter. The most comfortable months are January to June and October to November.
Best time to visit Pomona
For comfortable weather, go in January to June and October to November. In those months the average high stays between 62°F and 86°F, nights average 42°F or warmer, and rain stays under 4.5 inches for the month.
Month by month
| Month | High | Low | Precip. | Snow | Wet days | Days 90°F+ | Nights below 32°F | Feels |
|---|---|---|---|---|---|---|---|---|
| January | 68°F | 43°F | 2.9 in | 0.0 in | 4 | 0 | 1 | mild |
| February | 67°F | 45°F | 4.2 in | 0.0 in | 5 | 0 | 0 | mild |
| March | 72°F | 47°F | 2.1 in | 0.0 in | 3 | 1 | 0 | mild |
| April | 76°F | 50°F | 1.0 in | 0.0 in | 1 | 2 | 0 | mild |
| May | 78°F | 54°F | 0.2 in | 0.0 in | 0 | 4 | 0 | warm |
| June | 84°F | 57°F | 0.1 in | 0.0 in | 0 | 7 | 0 | warm |
| July | 90°F | 62°F | 0.0 in | 0.0 in | 0 | 17 | 0 | hot |
| August | 92°F | 63°F | 0.0 in | 0.0 in | 0 | 19 | 0 | hot |
| September | 89°F | 60°F | 0.0 in | 0.0 in | 0 | 15 | 0 | hot |
| October | 81°F | 54°F | 1.0 in | 0.0 in | 2 | 5 | 0 | warm |
| November | 74°F | 47°F | 0.7 in | 0.0 in | 1 | 0 | 0 | mild |
| December | 67°F | 42°F | 2.3 in | 0.0 in | 4 | 0 | 1 | mild days, chilly nights |
| Year | 78°F avg | 52°F avg | 14.5 in | 0.0 in | 21 | 71 | 3 |
"Wet days" are days with at least 0.1 inch of precipitation. "Feels" is a plain-language label for the average high. Normals for 1991-2020 from NOAA NCEI, station Pomona/Fairplex, CA (USC00047050), 1.3 miles from the city center. Averages describe typical conditions, not a forecast.
Sunrise, sunset and daylight in Pomona
The shortest day is December 21, with 9h 52m of daylight; the longest is June 21, with 14h 25m. The earliest sunset comes around November 27 (4:41 pm) and the latest around June 25 (8:06 pm). The sun sets after 8 pm on 45 days a year.
| On the 15th of | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 6:56 am | 5:04 pm | 10h 08m |
| February | 6:35 am | 5:34 pm | 10h 59m |
| March | 7:01 am | 6:58 pm | 11h 57m |
| April | 6:20 am | 7:22 pm | 13h 02m |
| May | 5:49 am | 7:45 pm | 13h 56m |
| June | 5:39 am | 8:03 pm | 14h 24m |
| July | 5:51 am | 8:02 pm | 14h 12m |
| August | 6:12 am | 7:37 pm | 13h 25m |
| September | 6:34 am | 6:57 pm | 12h 23m |
| October | 6:56 am | 6:16 pm | 11h 20m |
| November | 6:24 am | 4:46 pm | 10h 23m |
| December | 6:49 am | 4:42 pm | 9h 53m |
Calculated for 2026 at the center of Pomona with NOAA's solar equations, in local clock time (Pacific Time, including daylight saving time where it applies). Times shift by a minute or two from year to year.
Is Pomona getting warmer?
The last 10 years averaged 3.0°F warmer than the 20th century. See the climate stripes for Pomona.Frequently asked questions
What is the warmest month in Pomona?
August is the warmest month, with an average high of 92°F and an average low of 63°F (NOAA 1991-2020 normals).
What is the coldest month in Pomona?
December is the coldest, with average lows of 42°F and highs of 67°F.
What is the rainiest month in Pomona?
February gets the most precipitation, 4.2 inches on average. July is the driest at 0.0 inches.
Does it snow in Pomona?
Very little. The normal yearly snowfall is under one inch.
When is the best time to visit Pomona?
For comfortable weather, January to June and October to November. Those months average highs between 62 and 86°F with lows of 42°F or more and modest rain.
Thinking of moving to Pomona?
See what homes, rent and everyday prices cost, who lives there and how it compares with nearby cities on the full Pomona profile.
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