Climateby Month

Corona, CA weather in April

NOAA 1991-2020 normals and daily records · Corona all year

Corona is mild and dry in April: highs average 77°F and nights drop to about 49°F. There are about 2 days with rain. A great month for outdoor plans.

Normal high
77°F
Normal low
49°F
Wet days
2
0.6 in total
Daylight
13.0 h

How April changes from start to finish

Normal values at the start and end of April
April 1April 30
Normal high75°F79°F
Normal low47°F51°F
Chance of a wet day10%7%
Sunrise / sunset6:37 am / 7:10 pm6:02 am / 7:32 pm
Daylight12.6 h13.5 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

  1. 6 am49°Fdew point 44°F
  2. 9 am63°Fdew point 43°F
  3. Noon71°Fdew point 40°F
  4. 3 pm73°Fdew point 41°F
  5. 6 pm65°Fdew point 43°F
  6. 9 pm56°Fdew point 45°F

NOAA hourly normals (local standard time) from March AFB (18 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 (temperature only: no humidity station nearby)17 of 30
  • Hot dayshigh 90°F or more3 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, 1991-20202016: average high 82°F
  • Coolest April1999: average high 69°F
  • Wettest April2020: 2.9 in
  • Driest April1992: no measurable precipitation
  • Highest reading106°F (April 26, 2004)
  • Lowest reading31°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

MarchAprilMay
Normal high73°F77°F81°F
Normal low46°F49°F54°F
Wet days521
Comfortable days181716
Daylight12.0 h13.0 h13.9 h

Highs change by +4°F from March and +4°F into May.

Nearby alternatives in April

How Corona ranks in April

  • Normal high85th warmest of 378 cities; 4th of 60 in California
  • Wet days19th driest of 378

What to pack for Corona in April

  • Layers – afternoons near 77°F but nights near 49°F

Heating and cooling

April has 107 heating degree days and 43 cooling degree days (base 65°F), 5% of the year's total heating and cooling demand.

Questions

How hot is Corona in April?

The normal high is 77°F and the normal low is 49°F. From 1991 to 2020 the hottest April reading was 106°F (April 26, 2004).

Does it rain a lot in Corona 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 Corona?

April ranks 1st of 12 months on our comfort score for Corona (75 out of 100). It has about 17 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 and frost dates: Chino Airport (USW00003179), 8.0 mi NNW of the city center, 650 ft . NOAA normals and daily records, 1991-2020.
  • Rain, snowfall and snow depth: Riverside Fire Stn 3 (USC00047470), 12 mi ENE of the city center, 840 ft (162 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour and cloud cover: March AFB (USW00023119), 18 mi E of the city center, 1,516 ft (838 ft higher 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).