Climate averages 1991–2020

Downey 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.

Average high 26.0°C Daytime mean, October
Average low 14.2°C Night-time mean, October
Rainfall 15 mm 2 days with ≥1 mm
Daylight 11 h Sunrise to sunset, per day
Every month in Downey · average highYear overview

October is a warm month in Downey: daytime highs average 26.0°C and nights cool to about 14.2°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 15 mm of rain on roughly 2 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 Compton (9 km away). In October its highs average 25.7°C, about as warm as Downey, with 15 mm of rain.

Among the 498 cities listed in the United States, Downey ranks joint 102nd of 498 for the warmest October highs and joint 23rd of 498 for the driest October (rainfall, lowest first). The mean October high of those 498 cities is 21.4°C; Downey is 4.7°C warmer than that mean.

From October to November, average highs fall by 3.9°C to 22.1°C, and monthly rainfall rises from 15 mm to 19 mm.

The annual picture

October in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 05101520253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 1000

Averages 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

1991–2020
Monthly climate averages for Downey, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 18.5°C6.4°C6.4°C805.510.210 h
February 18.7°C7.3°C7.3°C865.910.911 h
March 20.0°C9.1°C9.1°C555.212.012 h
April 22.2°C10.8°C10.8°C192.513.013 h
May 23.8°C13.2°C13.2°C8.21.513.914 h
June 26.3°C15.1°C15.1°C2.00.314.414 h
July 29.2°C17.4°C17.4°C1.80.414.214 h
August 30.4°C18.0°C18.0°C0.30.113.413 h
September 29.4°C17.3°C17.3°C3.20.512.412 h
October, selected 26.0°C14.2°C14.2°C152.011.411 h
November 22.1°C9.7°C9.7°C192.210.410 h
December 18.3°C6.1°C6.1°C524.69.910 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

Distance from Downey

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 limits

How 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.