Pomona, CA weather in April
Pomona is mild and mostly dry in April: highs average 76°F and nights drop to about 51°F. Expect about 4 wet days. A great month for outdoor plans.
- Normal high
- 76°F
- Normal low
- 51°F
- Wet days
- 4
- 1.3 in total
- Daylight
- 13.1 h
How April changes from start to finish
| April 1 | April 30 | |
|---|---|---|
| Normal high | 74°F | 78°F |
| Normal low | 50°F | 53°F |
| Chance of a wet day | 16% | 13% |
| Sunrise / sunset | 6:38 am / 7:11 pm | 6:02 am / 7:33 pm |
| Daylight | 12.6 h | 13.5 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical April day
- 6 am54°Fdew point 44°F
- 9 am63°Fdew point 43°F
- Noon71°Fdew point 42°F
- 3 pm71°Fdew point 42°F
- 6 pm67°Fdew point 43°F
- 9 pm61°Fdew point 45°F
NOAA hourly normals (local standard time) from Burbank Glendale Pasadena Airport (36 mi away); average wind 6 mph; clear or few clouds in 71% of daytime hours, mostly cloudy or overcast in 24%.
What kind of days to expect
- Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)16 of 30
- Hot dayshigh 90°F or more3 of 30
- Wet daysat least 0.01 in of rain or melted snow4 of 30
- Notable rainat least 0.10 in2 of 30
- Freezing nightslow 32°F or below0 of 30
Average days per April, counted from daily records for each year 1991-2020.
Rain in April
Normal precipitation is 1.3 in; a dry April brings about 0.2 in and a wet one about 2.0 in (25th and 75th percentiles). About 1 day brings half an inch or more.
How April varies from year to year
- Warmest April, 1991-20202019: average high 80°F
- Coolest April1999: average high 68°F
- Wettest April2006: 6.2 in
- Driest April1997: no measurable precipitation
- Highest reading101°F (April 26, 2004)
- Lowest reading33°F (April 10, 1999)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
April compared with March and May
| March | April | May | |
|---|---|---|---|
| Normal high | 72°F | 76°F | 80°F |
| Normal low | 49°F | 51°F | 56°F |
| Wet days | 7 | 4 | 4 |
| Comfortable days | 17 | 16 | 16 |
| Daylight | 12.0 h | 13.1 h | 13.9 h |
Highs change by +4°F from March and +4°F into May.
Nearby alternatives in April
- Warmer: Palm Springs, CA71 mi · high 87°F · 1 wet day
- Drier: Palm Springs, CA71 mi · high 87°F · 1 wet day
- Cooler: Torrance, CA37 mi · high 68°F · 3 wet days
How Pomona ranks in April
- Normal high102nd warmest of 378 cities; 11th of 60 in California
- Wet days56th driest of 378
What to pack for Pomona in April
- Layers – afternoons near 76°F but nights near 51°F
Heating and cooling
April has 105 heating degree days and 57 cooling degree days (base 65°F), 5% of the year's total heating and cooling demand.
Questions
How hot is Pomona in April?
The normal high is 76°F and the normal low is 51°F. From 1991 to 2020 the hottest April reading was 101°F (April 26, 2004).
Does it rain a lot in Pomona in April?
About 4 days in April have at least 0.01 in of precipitation, and the normal total is 1.3 in. The wettest April in 1991-2020 was in 2006 (6.2 in); the driest was in 1997, with no measurable precipitation.
Is April a good time to visit Pomona?
April ranks 1st of 12 months on our comfort score for Pomona (73 out of 100). It has about 16 comfortable days (judged by temperature only) and about 3 days at 90°F or hotter. The best months are March, April and May.
Where the numbers come from
- Temperature: Ontario Intl Airport (USW00003102), 8.7 mi E of the city center, 949 ft (100 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Rain: San Gabriel Canyon PH (USC00047776), 11 mi NW of the city center, 744 ft (105 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Covina City Yard Fc387b (USC00042090), 7.7 mi WNW of the city center, 607 ft (242 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Pomona/Fairplex (USC00047050), 2.0 mi NNW of the city center, 999 ft (150 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Burbank Glendale Pasadena Airport (USW00023152), 36 mi WNW of the city center, 741 ft (108 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Not available for this location: daily humidity and wind (no station close enough or similar enough in elevation).