Weather on May 21
Anchorage, AK
55 Years of Data
Avg High
59°F
Avg Low
42°F
Warmest
2002
63°F avg
Coldest
1972
39°F avg
About This Date
May 21st in Anchorage, AK typically brings cool spring weather, with average highs around 59°F and lows near 42°F. Over 31 years of records, the warmest May 21st was in 2002 (63°F average), while the coldest was 1972 (39°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 23% of May 21st dates historically. The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
Planning for May 21st in Anchorage, AK? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 56° | 44° | 50° | — | — |
| 2024 | 50° | 42° | 46° | 0.15" | — |
| 2023 | 61° | 43° | 52° | — | — |
| 2022 | 70° | 42° | 56° | — | — |
| 2021 | 56° | 44° | 50° | 0.03" | — |
| 2020 | 60° | 46° | 53° | — | — |
| 2019 | 61° | 43° | 52° | — | — |
| 2018 | 61° | 43° | 52° | — | — |
| 2017 | 50° | 44° | 47° | 0.08" | — |
| 2016 | 53° | 46° | 50° | 0.1" | — |
| 2015 | 61° | 43° | 52° | — | — |
| 2014 | 65° | 40° | 52° | — | — |
| 2013 | 53° | 33° | 43° | — | — |
| 2012 | 63° | 46° | 54° | — | — |
| 2011 | 66° | 42° | 54° | — | — |
| 2010 | 67° | 42° | 54° | — | — |
| 2009 | 61° | 43° | 52° | — | — |
| 2008 | 58° | 40° | 49° | — | — |
| 2007 | 60° | 39° | 50° | — | — |
| 2006 | 58° | 44° | 51° | — | — |
| 2005 | 54° | 49° | 51° | 0.25" | — |
| 2004 | 67° | 44° | 55° | — | — |
| 2003 | 64° | 38° | 51° | — | — |
| 2002warmest | 78° | 49° | 63° | — | — |
| 2001 | 59° | 44° | 52° | — | — |
| 2000 | 55° | 37° | 46° | — | — |
| 1999 | 63° | 40° | 51° | 0.03" | — |
| 1998 | 54° | 40° | 47° | — | — |
| 1973 | 56° | 36° | 46° | — | — |
| 1972coldest | 46° | 32° | 39° | 0.13" | — |
| 1971 | 48° | 36° | 42° | — | — |
31 years of data from ANCHORAGE PARK STRIP