Climate averages 1991–2020

Anchorage weather
in March.

A freezing month with light precipitation: the 8th warmest and the 3rd driest of the year.

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

Average high -1.2°C Daytime mean, March

Average low -7.2°C Night-time mean, March

Precipitation 38 mm 9 days with ≥1 mm

Daylight 12 h Sunrise to sunset, per day

March is a freezing month in Anchorage: daytime highs average -1.2°C and nights cool to about -7.2°C. By daytime temperature it is the 8th warmest of the 12 months.

Expect about 38 mm of precipitation on roughly 9 days, which makes March a month with light precipitation (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 44 min on an average March day.

Among the 498 cities listed in the United States, Anchorage ranks 498th of 498 for the warmest March highs and joint 48th of 498 for the driest March (precipitation, lowest first). The mean March high of those 498 cities is 14.9°C; Anchorage is 16.1°C cooler than that mean.

From March to April, average highs rise by 5.8°C to 4.7°C, and monthly precipitation falls from 38 mm to 29 mm.

The annual picture

March in context

30-year average

Average highAverage low°C

Monthly precipitation

Average total · mm

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

Every month, side by side

Anchorage climate table

1991–2020

Monthly climate averages for Anchorage, 1991–2020
Month	Average highHigh / low	Average low	Precipitation mm/month	Wet days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	-6.8°C-10.9°C	-10.9°C	50	10.4	6.56 h
February	-3.9°C-8.5°C	-8.5°C	50	9.7	8.99 h
March, selected	-1.2°C-7.2°C	-7.2°C	38	8.5	11.712 h
April	4.7°C-1.8°C	-1.8°C	29	7.3	14.715 h
May	10.1°C2.9°C	2.9°C	30	7.1	17.417 h
June	15.4°C9.0°C	9.0°C	40	8.9	19.219 h
July	17.3°C11.9°C	11.9°C	73	12.5	18.418 h
August	16.3°C11.0°C	11.0°C	107	14.8	15.916 h
September	11.8°C6.7°C	6.7°C	117	15.3	13.013 h
October	4.4°C-0.2°C	-0.2°C	90	13.2	10.110 h
November	-2.6°C-6.8°C	-6.8°C	66	11.7	7.47 h
December	-5.1°C-9.4°C	-9.4°C	73	12.9	5.66 h

Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

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 Anchorage) is explained once on the Anchorage year overview and on the Sources, method and limits page.