Climate averages 1991–2020
Downey weather
in May.
A warm, very dry month: the 6th warmest and the 5th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Downey: daytime highs average 23.8°C and nights cool to about 13.2°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 8.2 mm of rain on roughly 2 days, which makes May a very dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 54 min on an average May day.
The nearest other city in this atlas is Compton (9 km away). In May its highs average 23.4°C, about as warm as Downey, with 8.2 mm of rain.
Among the 498 cities listed in the United States, Downey ranks joint 239th of 498 for the warmest May highs and joint 36th of 498 for the driest May (rainfall, lowest first). The mean May high of those 498 cities is 23.8°C; Downey is level with that mean.
From May to June, average highs rise by 2.5°C to 26.3°C, and monthly rainfall falls from 8.2 mm to 2.0 mm.
The annual picture
May 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
Downey climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 18.5°C6.4°C | 6.4°C | 80 | 5.5 | 10.210 h |
| February | 18.7°C7.3°C | 7.3°C | 86 | 5.9 | 10.911 h |
| March | 20.0°C9.1°C | 9.1°C | 55 | 5.2 | 12.012 h |
| April | 22.2°C10.8°C | 10.8°C | 19 | 2.5 | 13.013 h |
| May, selected | 23.8°C13.2°C | 13.2°C | 8.2 | 1.5 | 13.914 h |
| June | 26.3°C15.1°C | 15.1°C | 2.0 | 0.3 | 14.414 h |
| July | 29.2°C17.4°C | 17.4°C | 1.8 | 0.4 | 14.214 h |
| August | 30.4°C18.0°C | 18.0°C | 0.3 | 0.1 | 13.413 h |
| September | 29.4°C17.3°C | 17.3°C | 3.2 | 0.5 | 12.412 h |
| October | 26.0°C14.2°C | 14.2°C | 15 | 2.0 | 11.411 h |
| November | 22.1°C9.7°C | 9.7°C | 19 | 2.2 | 10.410 h |
| December | 18.3°C6.1°C | 6.1°C | 52 | 4.6 | 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
May in nearby cities
- Compton in MayUnited States · 9 kmHigh 23.4°C · Low 13.3°C · 8.2 mm rain
- East Los Angeles in MayUnited States · 10 kmHigh 23.8°C · Low 12.8°C · 8.2 mm rain
- Whittier in MayUnited States · 10 kmHigh 24.2°C · Low 12.8°C · 9.6 mm rain
- Buena Park in MayUnited States · 15 kmHigh 24.2°C · Low 13.4°C · 7.4 mm rain
- Los Angeles in MayUnited States · 16 kmHigh 25.0°C · Low 12.5°C · 8.2 mm rain
- El Monte in MayUnited States · 17 kmHigh 25.2°C · Low 12.9°C · 9.6 mm rain
- Long Beach in MayUnited States · 20 kmHigh 22.0°C · Low 13.6°C · 6.6 mm rain
- Hawthorne in MayUnited States · 20 kmHigh 22.9°C · Low 13.1°C · 8.2 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 Downey) is explained once on the Downey year overview and on the Sources, method and limits page.
Los Angeles, East Los Angeles and Inglewood lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.