Climateby Month

Corona, CA climate by month

NOAA 1991-2020 normals · 678 ft elevation

Corona has hot summers and mild winters. Highs peak at 96°F in August and fall to 69°F in December. The wettest month is February (about 6 wet days) and the driest is June (about 0). Snow is rare. By our comfort score the best months are March, April and May.

Warmest month
96°F
August normal high
Coldest month
40°F
December normal low
Wet days a year
28
10.0 in of precipitation
Hot days a year
99
90°F or hotter

How warm is Corona?

Normal highs range from 69°F in December to 96°F in August.

40°60°80°100° January: normal high 70°F (21°C), low 42°F (6°C) February: normal high 70°F (21°C), low 43°F (6°C) March: normal high 73°F (23°C), low 46°F (8°C) April: normal high 77°F (25°C), low 49°F (9°C) May: normal high 81°F (27°C), low 54°F (12°C) June: normal high 88°F (31°C), low 59°F (15°C) July: normal high 94°F (34°C), low 63°F (17°C) August: normal high 96°F (36°C), low 63°F (17°C) 96° 63° September: normal high 93°F (34°C), low 60°F (16°C) October: normal high 85°F (29°C), low 53°F (12°C) November: normal high 76°F (24°C), low 45°F (7°C) December: normal high 69°F (21°C), low 40°F (4°C) 69° 40° JFMAMJJASOND

Bars run from the normal low to the normal high for each month.

How rainy is Corona?

February has the most wet days (about 6); the year brings about 10 in of precipitation.

January: 5 wet days February: 6 wet days 6 March: 5 wet days April: 2 wet days May: 1 wet days June: 0 wet days 0 July: 1 wet days August: 0 wet days September: 0 wet days October: 1 wet days November: 2 wet days December: 4 wet days JFMAMJJASOND

Wet day: at least 0.01 in of rain or melted snow, counted from daily records 1991-2020.

How humid is Corona?

Humidity data is not available for this location.

How much daylight?

Daylight ranges from about 9.9 hours in December to 14.4 hours in June.

January: 10.2 hours of daylight February: 11.0 hours of daylight March: 12.0 hours of daylight April: 13.0 hours of daylight May: 13.9 hours of daylight June: 14.4 hours of daylight 14.4 July: 14.2 hours of daylight August: 13.4 hours of daylight September: 12.4 hours of daylight October: 11.3 hours of daylight November: 10.4 hours of daylight December: 9.9 hours of daylight 9.9 JFMAMJJASOND
See all numbers
Monthly climate normals and day counts for Corona, 1991-2020
MonthHighLowPrecip.Wet daysDaylight
January 70°F42°F 2.2 in5 10.2 h
February 70°F43°F 2.5 in6 11.0 h
March 73°F46°F 1.6 in5 12.0 h
April 77°F49°F 0.6 in2 13.0 h
May 81°F54°F 0.2 in1 13.9 h
June 88°F59°F 0.08 in0 14.4 h
July 94°F63°F 0.1 in1 14.2 h
August 96°F63°F 0.1 in0 13.4 h
September 93°F60°F 0.1 in0 12.4 h
October 85°F53°F 0.4 in1 11.3 h
November 76°F45°F 0.7 in2 10.4 h
December 69°F40°F 1.4 in4 9.9 h

High and low: NOAA 1991-2020 normal daily high and low. Wet days: at least 0.01 in of rain or melted snow. Muggy days: daily mean dew point 65°F or higher.

Best months to visit Corona

By our comfort score, the best months are March, April and May.

Comfort score by month (0-100) and its parts, in days per month
MonthScoreComfortableNotable rainHot or cold
Jan 671740
Feb 641350
Mar 721831
Apr 751713
May 741615
Jun 607011
Jul 430023
Aug 400025
Sep 454019
Oct 591219
Nov 681723
Dec 671730

Score = 40 × share of comfortable days + 25 × share of days without notable rain + 20 × share of days neither hot (90°F+) nor cold (high 40°F or below) + 15 × daylight. Comfortable days here are judged by temperature only (no humidity station nearby). How the score works.

Frost dates in Corona

The last spring frost typically comes around Jan 17, and the first fall frost around Dec 19, leaving 335 frost-free days in a typical year.

Frost and freeze dates for Corona
Typical date1 year in 10
Last spring frost (32°F)Jan 17after Feb 22
First fall frost (32°F)Dec 19before Nov 27
Hard freeze (28°F)in about 29% of years; no typical date
Frost-free season335 daysunder 293 days

"Typical" is the date with a 50% chance of a later spring frost (or earlier fall frost). Planting after the "1 year in 10" spring date gives a 90% chance of no further frost. The Old Farmer's Almanac publishes 30% dates, which fall between our typical and 1-in-10 dates.

Station: Chino Airport (USW00003179), NOAA 1991-2020 freeze probabilities. Frost dates for every city in California.

Hottest and coldest readings, 1991-2020

The highest reading was 121°F (September 6, 2020); the lowest was 20°F (January 14, 2007).

From the temperature station's daily records with NOAA quality flags removed. Not an all-time record.

Near Corona

Similar climates elsewhere

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).

Distances from the city center (USGS). Methodology · Report an error