Corona, CA weather in September
In September, Corona sees highs around 93°F and lows around 60°F: hot and dry. Rain is rare.
- Normal high
- 93°F
- Normal low
- 60°F
- Wet days
- 0
- 0.1 in total
- Daylight
- 12.4 h
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 96°F | 88°F |
| Normal low | 63°F | 58°F |
| Chance of a wet day | 1% | 2% |
| Sunrise / sunset | 6:24 am / 7:16 pm | 6:44 am / 6:36 pm |
| Daylight | 12.9 h | 11.9 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 September day
- 6 am61°Fdew point 52°F
- 9 am77°Fdew point 52°F
- Noon88°Fdew point 48°F
- 3 pm89°Fdew point 50°F
- 6 pm79°Fdew point 52°F
- 9 pm69°Fdew point 54°F
NOAA hourly normals (local standard time) from March AFB (18 mi away); average wind 5 mph; clear or few clouds in 82% of daytime hours, mostly cloudy or overcast in 12%.
What kind of days to expect
- Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)4 of 30
- Hot dayshigh 90°F or more19 of 30
- Wet daysat least 0.01 in of rain or melted snow0 of 30
- Notable rainat least 0.10 in0 of 30
- Freezing nightslow 32°F or below0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain in September
Normal precipitation is 0.1 in; a dry September brings about 0.0 in and a wet one about 0.0 in (25th and 75th percentiles). Days with half an inch or more are rare.
How September varies from year to year
- Warmest September, 1991-20202020: average high 100°F
- Coolest September1998: average high 84°F
- Wettest September2015: 1.8 in
- Driest September1991: no measurable precipitation
- Highest reading121°F (September 6, 2020)
- Lowest reading47°F (September 27, 2013)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
September compared with August and October
| August | September | October | |
|---|---|---|---|
| Normal high | 96°F | 93°F | 85°F |
| Normal low | 63°F | 60°F | 53°F |
| Wet days | 0 | 0 | 1 |
| Comfortable days | 0 | 4 | 12 |
| Daylight | 13.4 h | 12.4 h | 11.3 h |
Highs change by -3°F from August and -8°F into October.
Nearby alternatives in September
- Warmer: Palm Springs, CA59 mi · high 102°F · 1 wet day
- Cooler: Anaheim, CA20 mi · high 84°F · 1 wet day
How Corona ranks in September
- Normal high18th warmest of 378 cities; 5th of 60 in California
- Wet days1st driest of 378
What to pack for Corona in September
- Light, breathable clothing – highs near 93°F
- Layers – afternoons near 93°F but nights near 60°F
Heating and cooling
September has 1 heating degree days and 348 cooling degree days (base 65°F), 11% of the year's total heating and cooling demand.
Questions
How hot is Corona in September?
The normal high is 93°F and the normal low is 60°F. From 1991 to 2020 the hottest September reading was 121°F (September 6, 2020).
Does it rain a lot in Corona in September?
About 0 days in September have at least 0.01 in of precipitation, and the normal total is 0.2 in. The wettest September in 1991-2020 was in 2015 (1.8 in); the driest was in 1991, with no measurable precipitation.
Is September a good time to visit Corona?
September ranks 10th of 12 months on our comfort score for Corona (45 out of 100). It has about 4 comfortable days (judged by temperature only) and about 19 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).