Weather on August 21
Anchorage, AK
55 Years of Data
About This Date
August 21st in Anchorage, AK typically brings mild summer weather, with average highs around 64°F and lows near 50°F. Over 30 years of records, the warmest August 21st was in 2020 (64°F average), while the coldest was 2017 (52°F) — a 12°F range across recorded history. Rain or other precipitation has occurred on about 57% of August 21st dates historically, with the wettest August 21st recording 2.46" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 21st in Anchorage, AK? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 65° | 56° | 60° | — | — |
| 2024 | 57° | 49° | 53° | 0.36" | — |
| 2023 | 67° | 49° | 58° | — | — |
| 2022 | 65° | 53° | 59° | 0.25" | — |
| 2021 | 65° | 43° | 54° | — | — |
| 2020warmest | 77° | 50° | 64° | — | — |
| 2019 | 69° | 41° | 55° | — | — |
| 2018 | 57° | 55° | 56° | 2.46" | — |
| 2017coldest | 55° | 49° | 52° | 0.94" | — |
| 2016 | 64° | 55° | 60° | 0.13" | — |
| 2015 | 64° | 51° | 58° | 0.03" | — |
| 2014 | 69° | 50° | 60° | 0.18" | — |
| 2013 | 58° | 53° | 55° | 1.04" | — |
| 2012 | 65° | 49° | 57° | — | — |
| 2011 | 65° | 54° | 59° | — | — |
| 2010 | 67° | 51° | 59° | 0.03" | — |
| 2009 | 67° | 43° | 55° | — | — |
| 2008 | 68° | 53° | 61° | 1.02" | — |
| 2007 | 61° | 54° | 57° | 0.08" | — |
| 2006 | 61° | 47° | 54° | 0.03" | — |
| 2005 | 64° | 50° | 57° | 1.3" | — |
| 2004 | 76° | 49° | 62° | — | — |
| 2003 | 62° | 48° | 55° | 0.15" | — |
| 2002 | 59° | 53° | 56° | 0.76" | — |
| 2001 | 75° | 51° | 63° | — | — |
| 2000 | 60° | 48° | 54° | 0.43" | — |
| 1999 | 58° | 50° | 54° | — | — |
| 1998 | 59° | 51° | 55° | 0.91" | — |
| 1972 | 65° | 46° | 55° | — | — |
| 1971 | 62° | 49° | 55° | — | — |
Anchorage, AK Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Anchorage, AK Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Anchorage, AK Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Anchorage, AK
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