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Sitka, AK Weather
Sitka, Alaska sits at 57.1932, -135.3674. Its warmest month is August, when the day usually reaches 62F, and its coldest is February, when the night usually falls to 29F. October is the wettest, with rain on about 23 days. The hottest day in the station record is 87F on July 31, 2020, and the coldest night 3F on January 16, 2012. This page carries live conditions, an hour by hour timeline, a ten day outlook, radar, monthly averages and searchable daily history back to 1940.
About Sitka weather
Sitka sits at 57.1932, -135.3674 and covers about 2870.101 square miles. The forecast above is live: current conditions lead with the HRRR model, corrected against the nearest reporting station and against radar overhead, because a model can lag a storm and the radar cannot.
The tabs at the top of this page carry the hour by hour timeline, the ten day outlook and live radar. Where the models disagree about a day, the rock says so on the day rather than quietly picking a winner.
The rock grades itself against what actually happened and publishes the result whether it flatters it or not. Those standings live in the Receipts.
Where these numbers come from
Current conditions and forecast: NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
Radar: NOAA MRMS merged reflectivity, rendered into tiles by myweatherrock.
Monthly averages and records: computed by myweatherrock from NOAA GHCN-Daily station records at the nearest qualifying station, named on this page with its distance. Measurements, not estimates.
Daily history search: the town's own NOAA GHCN-Daily station file, held on our server, measurements by day. Months the station missed fall back to the Open-Meteo historical archive (reanalysis), and the page says so when it does.
What the weather is usually like in Sitka
Sitka is warmest in August, when the day usually reaches 62F, and coldest in February, when the night usually falls to 29F. October is the wettest month, with rain on about 23 days of it.
Usual high and low, by month
Days with rain, by month
The same year as numbers
Month
Usual high
Usual low
Rain days
January
38F
30F
22
February
39F
29F
17
March
41F
29F
18
April
48F
34F
18
May
54F
40F
16
June
58F
45F
18
July
61F
50F
18
August
62F
50F
19
September
58F
46F
21
October
49F
39F
23
November
41F
33F
22
December
38F
31F
22
Thirty-year normals, 1991 to 2020, computed from the daily record, measured at the Sitka 1 Ne station 9.5 miles away. A rain day means at least a hundredth of an inch fell, the same measurable-precipitation mark the Weather Service uses. Source: computed from the station record, NOAA GHCN daily.
Sitka weather history, back to 1940
Pick any month back to 1940 and see what the archive holds for Sitka: the reanalysis record of what happened, day by day.
Reading this month last year to start you off.
Sitka weather records
In 21,254 days of observations Sitka has been as hot as 87F and as cold as 3F. Not averages: the actual days.
Hottest day
87F
July 31, 2020
Coldest night
3F
January 16, 2012
Wettest day
5.04 in
September 10, 2015
Biggest snow
15.0 in
December 17, 1961
NOAA GHCN daily station records, observed 2005 to 2025: temperature at the Sitka 1 Ne station, 9.5 miles away; snowfall at the Sitka Ap station, 10.1 miles away. Station measurements, not estimates. Record dates reflect the station's own observation schedule, and the official state record may live at a different station.
Common questions about Sitka weather
Common questions
What is the weather usually like in Sitka, AK?
Sitka is warmest in August, when the day usually reaches 62F, and coldest in February, when the night usually falls to 29F. Rain falls on roughly 234 days a year, most often in October. Averages are thirty-year normals, 1991 to 2020, computed from the nearest NOAA station's own daily record.
How much does it rain in Sitka, AK?
About 234 days a year see at least a hundredth of an inch, which is the Weather Service's measurable-precipitation mark. October is the wettest month with rain on about 23 of its days, and May the driest with about 16.
What is the hottest it has ever been in Sitka, AK?
The hottest day measured for Sitka reached 87F on July 31, 2020, and the coldest night 3F on January 16, 2012. Both are real NOAA station measurements from the GHCN daily archive, observed 2005 to 2025, at the Sitka 1 Ne station. Not estimates, though the official state record may live at a different station.
Can I look up past weather for Sitka, AK?
Yes, and for free. The History tab on this page takes any month back to 1940 and shows every day of it: the high, the low, what fell, and that month's hottest and coldest day. No account and no payment.
Is the Sitka forecast on this page free, and does it track me?
It is free, carries no advertising, and needs no account. Nothing about a visitor leaves the device except the coordinates needed to fetch a forecast, and those are not stored against anyone.