Weather on April 20 at Katmai
Katmai National Park and Preserve
AKAlaska200 ft elevation
Avg High50°F
Avg Low31°F
Warmest201647°F
Coldest197134°F
Based on 31 years of data from Anchorage, AK
Planning Your Visit
April 20th in Katmai National Park (via Anchorage, AK) typically brings cool spring weather, with average highs around 50°F and lows near 31°F. Over 31 years of records, the warmest April 20th was in 2016 (47°F average), while the coldest was 1971 (34°F) — a 13°F range across recorded history. Rain or other precipitation has occurred on about 10% of April 20th dates historically. The last decade has been 1.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.8°F cooler on this date compared to 20-30 years ago.
Planning for April 20th in Katmai? Bring layers as temperatures can vary throughout the day.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 49°F | 31°F | 0" | -- |
| 2024 | 57°F | 34°F | 0" | -- |
| 2023 | 48°F | 26°F | 0" | -- |
| 2022 | 48°F | 25°F | 0" | -- |
| 2021 | 56°F | 33°F | 0" | -- |
| 2020 | 50°F | 38°F | 0" | -- |
| 2019 | 40°F | 30°F | 0.15" | -- |
| 2018 | 50°F | 36°F | 0" | -- |
| 2017 | 51°F | 29°F | 0" | -- |
| 2016 | 54°F | 40°F | 0" | -- |
| 2015 | 41°F | 33°F | 0.05" | -- |
| 2014 | 59°F | 30°F | 0" | -- |
| 2013 | 46°F | 23°F | 0" | -- |
| 2012 | 53°F | 33°F | 0" | -- |
| 2011 | 53°F | 30°F | 0" | -- |
| 2010 | 46°F | 28°F | 0" | -- |
| 2009 | 51°F | 29°F | 0" | -- |
| 2008 | 51°F | 28°F | -- | -- |
| 2007 | 44°F | 32°F | 0" | -- |
| 2006 | 46°F | 27°F | 0" | -- |
| 2005 | 54°F | 39°F | 0" | -- |
| 2004 | 46°F | 34°F | 0.03" | -- |
| 2003 | 51°F | 38°F | 0" | -- |
| 2002 | 45°F | 34°F | 0" | 0" |
| 2001 | 57°F | 30°F | 0" | -- |
| 2000 | 54°F | 34°F | 0" | 0" |
| 1999 | 53°F | 34°F | 0" | 0" |
| 1998 | 52°F | 36°F | 0" | 0" |
| 1973 | 48°F | 28°F | 0" | 0" |
| 1972 | 43°F | 26°F | 0" | 0" |
| 1971 | 41°F | 26°F | 0" | 0" |
April 20 at Nearby Parks
Holiday Weather at Katmai
Official NPS WebsiteVisit nps.gov/katm for park information, alerts, and reservations
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