Climate averages 1991–2020

Anchorage weather
in July.

A mild, moderately wet month: the warmest and the joint 8th driest of the year.

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

Average high 17.3°C Daytime mean, July

Average low 11.9°C Night-time mean, July

Rainfall 73 mm 13 days with ≥1 mm

Daylight 18 h Sunrise to sunset, per day

July is a mild month in Anchorage: daytime highs average 17.3°C and nights cool to about 11.9°C. By daytime temperature it is the warmest month of the year.

Expect about 73 mm of rain on roughly 13 days, which makes July a moderately wet month (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 18 h 24 min on an average July day.

Among the 498 cities listed in the United States, Anchorage ranks 498th of 498 for the warmest July highs and joint 223rd of 498 for the driest July (rainfall, lowest first). The mean July high of those 498 cities is 30.3°C; Anchorage is 13.0°C cooler than that mean.

From July to August, average highs fall by 1.0°C to 16.3°C, and monthly rainfall rises from 73 mm to 107 mm.

The annual picture

July 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	-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, selected	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.