Climate averages 1991–2020
Corona weather
in October.
A warm, fairly dry month: the 5th warmest and the 6th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
October is a warm month in Corona: daytime highs average 27.0°C and nights cool to about 13.7°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 22 mm of rain on roughly 3 days, which makes October a fairly dry month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 22 min on an average October day.
The nearest other city in this atlas is Riverside (18 km away). In October its highs average 26.9°C, about as warm as Corona, with 22 mm of rain.
Among the 498 cities listed in the United States, Corona ranks joint 52nd of 498 for the warmest October highs and joint 92nd of 498 for the driest October (rainfall, lowest first). The mean October high of those 498 cities is 21.4°C; Corona is 5.7°C warmer than that mean.
From October to November, average highs fall by 4.7°C to 22.3°C, and monthly rainfall rises from 22 mm to 30 mm.
The annual picture
October in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Corona climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 18.3°C5.8°C | 5.8°C | 96 | 6.6 | 10.210 h |
| February | 18.6°C6.6°C | 6.6°C | 111 | 7.4 | 10.911 h |
| March | 20.3°C8.5°C | 8.5°C | 68 | 6.8 | 12.012 h |
| April | 22.7°C10.4°C | 10.4°C | 32 | 4.6 | 13.013 h |
| May | 25.1°C13.1°C | 13.1°C | 15 | 2.6 | 13.914 h |
| June | 28.7°C15.6°C | 15.6°C | 3.4 | 0.5 | 14.414 h |
| July | 32.0°C18.5°C | 18.5°C | 2.2 | 0.5 | 14.214 h |
| August | 33.2°C19.3°C | 19.3°C | 1.1 | 0.3 | 13.413 h |
| September | 31.6°C17.8°C | 17.8°C | 5.5 | 1.2 | 12.412 h |
| October, selected | 27.0°C13.7°C | 13.7°C | 22 | 3.1 | 11.411 h |
| November | 22.3°C9.1°C | 9.1°C | 30 | 3.5 | 10.410 h |
| December | 18.0°C5.6°C | 5.6°C | 67 | 5.8 | 9.910 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Riverside in OctoberUnited States · 18 kmHigh 26.9°C · Low 12.7°C · 22 mm rain
- Chino in OctoberUnited States · 19 kmHigh 26.1°C · Low 13.3°C · 19 mm rain
- Chino Hills in OctoberUnited States · 22 kmHigh 25.6°C · Low 13.2°C · 19 mm rain
- Ontario in OctoberUnited States · 22 kmHigh 26.5°C · Low 13.8°C · 19 mm rain
- Rancho Cucamonga in OctoberUnited States · 26 kmHigh 26.4°C · Low 13.2°C · 22 mm rain
- Pomona in OctoberUnited States · 26 kmHigh 26.3°C · Low 13.7°C · 19 mm rain
- Fontana in OctoberUnited States · 27 kmHigh 26.3°C · Low 12.2°C · 22 mm rain
- Santa Ana, United States in OctoberUnited States · 31 kmHigh 23.7°C · Low 15.0°C · 17 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Corona) is explained once on the Corona year overview and on the Sources, method and limits page.
Riverside, Fontana and Rancho Cucamonga lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.