Weather on August 21 at Katmai
Katmai National Park and Preserve
Based on 30 years of data from Anchorage, AK
Planning Your Visit
August 21st in Katmai National Park (via 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 Katmai? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 65°F | 56°F | 0" | -- |
| 2024 | 57°F | 49°F | 0.36" | -- |
| 2023 | 67°F | 49°F | 0" | -- |
| 2022 | 65°F | 53°F | 0.25" | -- |
| 2021 | 65°F | 43°F | 0" | -- |
| 2020 | 77°F | 50°F | 0" | -- |
| 2019 | 69°F | 41°F | 0" | -- |
| 2018 | 57°F | 55°F | 2.46" | -- |
| 2017 | 55°F | 49°F | 0.94" | -- |
| 2016 | 64°F | 55°F | 0.13" | -- |
| 2015 | 64°F | 51°F | 0.03" | -- |
| 2014 | 69°F | 50°F | 0.18" | -- |
| 2013 | 58°F | 53°F | 1.04" | -- |
| 2012 | 65°F | 49°F | 0" | -- |
| 2011 | 65°F | 54°F | 0" | -- |
| 2010 | 67°F | 51°F | 0.03" | -- |
| 2009 | 67°F | 43°F | 0" | -- |
| 2008 | 68°F | 53°F | 1.02" | -- |
| 2007 | 61°F | 54°F | 0.08" | -- |
| 2006 | 61°F | 47°F | 0.03" | -- |
| 2005 | 64°F | 50°F | 1.3" | -- |
| 2004 | 76°F | 49°F | 0" | 0" |
| 2003 | 62°F | 48°F | 0.15" | -- |
| 2002 | 59°F | 53°F | 0.76" | 0" |
| 2001 | 75°F | 51°F | 0" | -- |
| 2000 | 60°F | 48°F | 0.43" | -- |
| 1999 | 58°F | 50°F | 0" | 0" |
| 1998 | 59°F | 51°F | 0.91" | 0" |
| 1972 | 65°F | 46°F | 0" | 0" |
| 1971 | 62°F | 49°F | 0" | 0" |