Riverside, CA weather in April
In April, Riverside sees highs around 76°F and lows around 50°F: mild and dry. Expect about 2 wet days. Great for outdoor plans.
- Normal high
- 76°F
- Normal low
- 50°F
- Wet days
- 2
- 0.6 in total
- Muggy days
- 0
- dew point 65°F+
How April changes from start to finish
| April 1 | April 30 | |
|---|---|---|
| Normal high | 74°F | 78°F |
| Normal low | 48°F | 53°F |
| Chance of a wet day | 10% | 7% |
| Sunrise / sunset | 6:36 am / 7:10 pm | 6:01 am / 7:32 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 am49°Fdew point 44°F
- 9 am63°Fdew point 43°F
- Noon71°Fdew point 40°F
- 3 pm73°Fdew point 41°F
- 6 pm65°Fdew point 43°F
- 9 pm56°Fdew point 45°F
NOAA hourly normals (local standard time) from March AFB (9 mi away); average wind 6 mph; clear or few clouds in 62% of daytime hours, mostly cloudy or overcast in 30%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F17 of 30
- Hot dayshigh 90°F or more3 of 30
- Muggy daysdaily mean dew point 65°F or more0 of 30
- Wet daysat least 0.01 in of rain or melted snow2 of 30
- Notable rainat least 0.10 in1 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 0.6 in; a dry April brings about 0.07 in and a wet one about 0.8 in (25th and 75th percentiles). Days with half an inch or more are rare.
How April varies from year to year
- Warmest April, 1991-20202017: average high 81°F
- Coolest April1999: average high 70°F
- Wettest April2020: 2.9 in
- Driest April1992: no measurable precipitation
- Highest reading102°F (April 26, 2004)
- Lowest reading32°F (April 2, 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 | 47°F | 50°F | 55°F |
| Wet days | 5 | 2 | 1 |
| Comfortable days | 18 | 17 | 16 |
| Daylight | 12.0 h | 13.0 h | 13.9 h |
Highs change by +4°F from March and +4°F into May.
Nearby alternatives in April
- Warmer: Palm Springs, CA50 mi · high 87°F · 1 wet day
- Cooler: Big Bear Lake, CA34 mi · high 57°F · 4 wet days
How Riverside ranks in April
- Normal high98th warmest of 378 cities; 8th of 60 in California
- Wet days20th driest of 378
- Comfortable days46th most of 340
What to pack for Riverside in April
- Layers – afternoons near 76°F but nights near 50°F
Heating and cooling
April has 110 heating degree days and 48 cooling degree days (base 65°F), 5% of the year's total heating and cooling demand.
Questions
How hot is Riverside in April?
The normal high is 76°F and the normal low is 50°F. From 1991 to 2020 the hottest April reading was 102°F (April 26, 2004).
Does it rain a lot in Riverside in April?
About 2 days in April have at least 0.01 in of precipitation, and the normal total is 0.6 in. The wettest April in 1991-2020 was in 2020 (2.9 in); the driest was in 1992, with no measurable precipitation.
Is April a good time to visit Riverside?
April ranks 1st of 12 months on our comfort score for Riverside (74 out of 100). It has about 17 comfortable days and about 3 days at 90°F or hotter. The best months are March, April and May.
Where the numbers come from
- Temperature and frost dates: Riverside Muni Airport (USW00003171), 2.4 mi W of the city center, 805 ft . NOAA normals and daily records, 1991-2020.
- Rain, snowfall and snow depth: Riverside Fire Stn 3 (USC00047470), 0.5 mi ESE of the city center, 840 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: March AFB (USW00023119), 9.2 mi ESE of the city center, 1,516 ft (687 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: March Air Reserve Base (722860-23119), 9.2 mi ESE of the city center, 1,536 ft (707 ft higher than the city). Hourly observations, 1991-2020.