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Bellevue, WA Weather on April 20
April 20th in Bellevue, WA typically brings mild spring weather, with average highs around 61°F and lows near 43°F. Over 55 years of records, the warmest April 20th was in 2016 (66°F average), while the coldest was 2008 (41°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 47% of April 20th dates historically, with the wettest April 20th recording 1.5" of rain. The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
What to Expect on April 20
Planning for April 20th in Bellevue, WA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
April 20 Weather Records for Bellevue
- •The all-time record high for April 20th in Bellevue, WA is 80°F, set in 2016.
- •The coldest April 20th on record dropped to 35°F in 2008.
Frequently Asked Questions
What was the warmest April 20 ever in Bellevue?
The warmest April 20 in Bellevue, WA reached 80°F in 2016. That is 19°F above the long-term average high of 61°F.
What was the coldest April 20 ever in Bellevue?
The coldest April 20 in Bellevue, WA dropped to 35°F in 2008. That is 8°F below the long-term average low of 43°F.
What is the average temperature on April 20 in Bellevue?
On April 20, Bellevue averages a high of 61°F and a low of 43°F based on 55 years of NOAA weather observations from SEATTLE UNIV OF WASHIN.
How many years of weather data are available for April 20 in Bellevue?
We have 55 years of weather records for April 20 in Bellevue, WA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
April 20 Weather History in Bellevue
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 58°F | 46°F | 0.64" | -- |
| 2024 | 75°F | 48°F | 0" | -- |
| 2023 | 49°F | 37°F | 0.71" | -- |
| 2022 | 55°F | 38°F | 0.2" | -- |
| 2021 | 68°F | 46°F | 0" | -- |
| 2020 | 67°F | 42°F | 0" | -- |
| 2019 | 59°F | 44°F | 0" | -- |
| 2018 | 63°F | 41°F | 0" | -- |
| 2017 | 61°F | 45°F | 0.05" | -- |
| 2016 | 80°F | 52°F | 0" | -- |
| 2015 | 72°F | 44°F | 0" | -- |
| 2014 | 62°F | 46°F | 0" | -- |
| 2013 | 56°F | 47°F | 0.69" | -- |
| 2012 | 58°F | 45°F | 0.71" | -- |
| 2011 | 54°F | 37°F | 0" | -- |
| 2010 | 56°F | 48°F | 0.13" | -- |
| 2009 | 71°F | 43°F | 0" | -- |
| 2008 | 47°F | 35°F | 0.23" | -- |
| 2007 | 57°F | 37°F | 0" | -- |
| 2006 | 63°F | 46°F | 0.13" | -- |
| 2005 | 67°F | 40°F | 0" | -- |
| 2004 | 59°F | 45°F | 0.1" | -- |
| 2003 | 64°F | 45°F | 0.05" | -- |
| 2002 | 56°F | 42°F | 0" | -- |
| 2001 | 60°F | 42°F | 0" | -- |
| 2000 | 67°F | 47°F | 0" | -- |
| 1999 | 53°F | 44°F | 0.23" | -- |
| 1998 | 70°F | 40°F | 0" | -- |
| 1997 | 59°F | 45°F | 1.14" | -- |
| 1996 | 58°F | 37°F | 0" | -- |
| 1995 | 57°F | 42°F | 0.3" | -- |
| 1994 | 66°F | 46°F | 0" | -- |
| 1993 | 71°F | 46°F | 0.25" | -- |
| 1992 | 62°F | 42°F | 0.13" | -- |
| 1991 | 68°F | 44°F | 0" | -- |
| 1990 | 57°F | 49°F | 0.33" | -- |
| 1989 | 63°F | 52°F | 0.48" | -- |
| 1988 | 68°F | 49°F | 0" | -- |
| 1987 | 59°F | 38°F | 0" | -- |
| 1986 | 67°F | 48°F | 0" | -- |
| 1985 | 53°F | 37°F | 0" | -- |
| 1984 | 61°F | 41°F | 0.03" | -- |
| 1983 | 68°F | 51°F | 0.03" | -- |
| 1982 | 68°F | 38°F | 0" | -- |
| 1981 | 69°F | 47°F | 0.13" | -- |
| 1980 | 57°F | 44°F | 1.5" | -- |
| 1979 | 64°F | 40°F | 0" | -- |
| 1978 | 59°F | 42°F | 0.66" | -- |
| 1977 | 53°F | 37°F | 0" | -- |
| 1976 | 58°F | 43°F | 1.32" | -- |
| 1975 | 47°F | 37°F | 0.03" | -- |
| 1974 | 55°F | 37°F | 0" | -- |
| 1973 | 57°F | 39°F | 0.13" | -- |
| 1972 | 55°F | 43°F | 0" | -- |
| 1971 | 61°F | 46°F | 0" | -- |
Based on 55 years of data from NOAA station: SEATTLE UNIV OF WASHIN
Monthly Climate Averages
Historical temperature and precipitation averages for Bellevue, WA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.