Climate averages 1991–2020

Salem, United States weather
in January.

A cool, wet month: the 11th warmest and the 11th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 8.8°C Daytime mean, January
Average low 2.0°C Night-time mean, January
Rainfall 154 mm 16 days with ≥1 mm
Daylight 9 h Sunrise to sunset, per day
Every month in Salem · average highYear overview

January is a cool month in Salem, United States: daytime highs average 8.8°C and nights cool to about 2.0°C. By daytime temperature it is the 11th warmest of the 12 months.

Expect about 154 mm of rain on roughly 16 days, which makes January a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 12 min on an average January day.

The nearest other city in this atlas is Beaverton (63 km away). In January its highs average 7.9°C, 0.8°C cooler than Salem, United States, with 167 mm of rain.

Among the 498 cities listed in the United States, Salem, United States ranks joint 262nd of 498 for the warmest January highs and 480th of 498 for the driest January (rainfall, lowest first). The mean January high of those 498 cities is 9.5°C; Salem, United States is 0.7°C cooler than that mean.

From January to February, average highs rise by 1.5°C to 10.3°C, and monthly rainfall falls from 154 mm to 119 mm.

The annual picture

January 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. -5051015202530 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 2000

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Salem, United States climate table

1991–2020
Monthly climate averages for Salem, United States, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January, selected 8.8°C2.0°C2.0°C15415.99.29 h
February 10.3°C2.1°C2.1°C11913.910.410 h
March 12.3°C3.5°C3.5°C12815.711.912 h
April 14.6°C5.1°C5.1°C9214.313.513 h
May 18.6°C8.2°C8.2°C569.014.815 h
June 22.0°C10.8°C10.8°C305.915.516 h
July 27.6°C13.7°C13.7°C7.91.915.215 h
August 27.9°C14.1°C14.1°C102.014.114 h
September 24.5°C12.0°C12.0°C324.812.613 h
October 17.4°C7.9°C7.9°C8710.311.011 h
November 11.4°C4.4°C4.4°C15315.99.610 h
December 8.1°C1.9°C1.9°C18116.88.99 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

January in nearby cities

Distance from Salem

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 Salem) is explained once on the Salem, United States year overview and on the Sources, method and limits page.