Unalaska Weather in May
Average highs run from 44°F on May 1 to 49°F on May 31, and lows from 35°F to 40°F. Normal precipitation for the month is 4.20 in over about 18 wet days.
May day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 47°F
- Average low
- 37°F
- Precipitation
- 4.20 in
- Snowfall
- 0.2 in
- Record high
- 66°FMay 27, 1927
- Record low
- 15°FMay 2, 1984
- Chance of a freeze
- 73%
- Daylight
- 15 h 09 min to 16 h 44 min
- Cloud cover
- 91%
- Humidity
- 88%
- Dew point
- 36°F
- Wind
- 13.6 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| May 1 | 44°F | 35°F | 54°F 1920 | 26°F 1924 | 58% | 5% |
| May 2 | 45°F | 35°F | 57°F 1989 | 15°F 1984 | 58% | 5% |
| May 3 | 45°F | 35°F | 58°F 1915 | 20°F 1994 | 58% | 4% |
| May 4 | 45°F | 36°F | 58°F 1923 | 24°F 1986 | 58% | 4% |
| May 5 | 45°F | 36°F | 58°F 1935 | 25°F 2012 | 58% | 4% |
| May 6 | 45°F | 36°F | 57°F 2004 | 18°F 1984 | 58% | 3% |
| May 7 | 45°F | 36°F | 64°F 1929 | 27°F 1916 | 58% | 3% |
| May 8 | 45°F | 36°F | 58°F 1996 | 24°F 1917 | 58% | 3% |
| May 9 | 46°F | 36°F | 58°F 1924 | 19°F 1984 | 58% | 3% |
| May 10 | 46°F | 37°F | 57°F 1926 | 20°F 1928 | 58% | 2% |
| May 11 | 46°F | 37°F | 59°F 1996 | 28°F 1916 | 58% | 2% |
| May 12 | 46°F | 37°F | 55°F 1936 | 28°F 2012 | 58% | 2% |
| May 13 | 46°F | 37°F | 55°F 1933 | 28°F 1916 | 58% | 2% |
| May 14 | 46°F | 37°F | 59°F 1924 | 27°F 1989 | 58% | 1% |
| May 15 | 47°F | 37°F | 57°F 1924 | 24°F 1989 | 58% | 1% |
| May 16 | 47°F | 37°F | 59°F 1918 | 25°F 1989 | 58% | 1% |
| May 17 | 47°F | 38°F | 57°F 1918 | 24°F 1984 | 57% | 1% |
| May 18 | 47°F | 38°F | 58°F 1918 | 30°F 1916 | 57% | 1% |
| May 19 | 47°F | 38°F | 58°F 1929 | 30°F 1916 | 57% | 1% |
| May 20 | 47°F | 38°F | 57°F 1934 | 29°F 1916 | 57% | 1% |
| May 21 | 47°F | 38°F | 56°F 1931 | 29°F 1982 | 57% | 1% |
| May 22 | 48°F | 38°F | 56°F 1940 | 32°F 1934 | 57% | 1% |
| May 23 | 48°F | 38°F | 56°F 2016 | 30°F 1926 | 57% | 0% |
| May 24 | 48°F | 39°F | 57°F 1930 | 32°F 1990 | 57% | 0% |
| May 25 | 48°F | 39°F | 56°F 1992 | 31°F 1939 | 57% | 0% |
| May 26 | 48°F | 39°F | 56°F 2006 | 22°F 1984 | 56% | 0% |
| May 27 | 49°F | 39°F | 66°F 1927 | 32°F 1930 | 56% | 0% |
| May 28 | 49°F | 39°F | 60°F 2006 | 30°F 1933 | 56% | 0% |
| May 29 | 49°F | 39°F | 61°F 1933 | 31°F 1927 | 56% | 0% |
| May 30 | 49°F | 40°F | 60°F 1933 | 32°F 1928 | 55% | 0% |
| May 31 | 49°F | 40°F | 58°F 2006 | 30°F 1927 | 55% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (AKDT).
- May 1
- sunrise 7:29 AM, sunset 10:38 PM
- May 31
- sunrise 6:42 AM, sunset 11:26 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00502587 (Dutch Harbor), public domain. Records: NOAA GHCN-Daily, station USC00502587, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.