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Vacaville, CA Weather on April 9
April 9th in Vacaville, CA typically brings pleasant spring weather, with average highs around 71°F and lows near 44°F — a 27°F daily swing. Over 55 years of records, the warmest April 9th was in 1989 (75°F average), while the coldest was 1999 (45°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 11% of April 9th dates historically. The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
What to Expect on April 9
Planning for April 9th in Vacaville, CA? Great weather for outdoor activities.
April 9 Weather Records for Vacaville
- •The all-time record high for April 9th in Vacaville, CA is 94°F, set in 1989.
- •The coldest April 9th on record dropped to 32°F in 1999.
- •Temperatures have reached 90°F or higher on April 9th in 1 of the last 55 years.
- •A freeze (32°F or below) has occurred on April 9th in 1 of the last 55 years.
- •Last year (1971), April 9th was 5°F cooler than the long-term average.
Frequently Asked Questions
What was the warmest April 9 ever in Vacaville?
The warmest April 9 in Vacaville, CA reached 94°F in 1989. That is 23°F above the long-term average high of 71°F.
What was the coldest April 9 ever in Vacaville?
The coldest April 9 in Vacaville, CA dropped to 32°F in 1999. That is 12°F below the long-term average low of 44°F.
What is the average temperature on April 9 in Vacaville?
On April 9, Vacaville averages a high of 71°F and a low of 44°F based on 55 years of NOAA weather observations from VACAVILLE/NUT TREE AP ASOS.
How many years of weather data are available for April 9 in Vacaville?
We have 55 years of weather records for April 9 in Vacaville, CA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
April 9 Weather History in Vacaville
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 84°F | 44°F | 0" | -- |
| 2024 | 79°F | 40°F | 0" | -- |
| 2023 | 76°F | 42°F | 0" | -- |
| 2022 | 82°F | 44°F | 0" | -- |
| 2021 | 77°F | 46°F | 0" | -- |
| 2020 | 64°F | 48°F | -- | -- |
| 2019 | 72°F | 51°F | 0" | -- |
| 2018 | 77°F | 44°F | 0" | -- |
| 2017 | 63°F | 38°F | 0" | -- |
| 2016 | 61°F | 57°F | 0.41" | -- |
| 2015 | 70°F | 38°F | 0" | -- |
| 2014 | 80°F | 50°F | 0" | -- |
| 2013 | 76°F | 55°F | 0" | -- |
| 2012 | 71°F | 40°F | 0" | -- |
| 2011 | 67°F | 37°F | 0" | -- |
| 2010 | 75°F | 52°F | 0" | -- |
| 2009 | 57°F | 51°F | 0.15" | -- |
| 2008 | 68°F | 40°F | 0" | -- |
| 2007 | 74°F | 51°F | 0" | -- |
| 2006 | 63°F | 50°F | 0" | -- |
| 2005 | 68°F | 43°F | 0" | -- |
| 2004 | 87°F | 46°F | 0" | -- |
| 2003 | 75°F | 40°F | 0" | -- |
| 2002 | 61°F | 49°F | 0" | -- |
| 2001 | 65°F | 39°F | 0.05" | -- |
| 2000 | 70°F | 41°F | 0" | -- |
| 1999 | 58°F | 32°F | 0" | -- |
| 1998 | 62°F | 47°F | 0.05" | -- |
| 1997 | 70°F | 45°F | 0" | -- |
| 1996 | 70°F | 52°F | 0" | -- |
| 1995 | 65°F | 40°F | 0.03" | -- |
| 1994 | 66°F | 44°F | 0" | -- |
| 1993 | 69°F | 46°F | 0" | -- |
| 1992 | 75°F | 41°F | 0" | -- |
| 1991 | 75°F | 48°F | 0" | -- |
| 1990 | 78°F | 41°F | 0" | -- |
| 1989 | 94°F | 56°F | 0" | -- |
| 1988 | 83°F | 46°F | 0" | -- |
| 1987 | 85°F | 47°F | 0" | -- |
| 1986 | 75°F | 37°F | 0" | -- |
| 1985 | 86°F | 43°F | 0" | -- |
| 1984 | 65°F | 35°F | 0" | -- |
| 1983 | 60°F | 47°F | 0" | -- |
| 1982 | 68°F | 35°F | 0" | -- |
| 1981 | 71°F | 39°F | 0" | -- |
| 1980 | 71°F | 52°F | 0" | -- |
| 1979 | 68°F | 44°F | 0" | -- |
| 1978 | 74°F | 48°F | 0" | -- |
| 1977 | 68°F | 37°F | 0" | -- |
| 1976 | 68°F | 36°F | 0" | -- |
| 1975 | 67°F | 35°F | 0" | -- |
| 1974 | 62°F | 43°F | 0.43" | -- |
| 1973 | 74°F | 44°F | 0" | -- |
| 1972 | 68°F | 36°F | 0" | -- |
| 1971 | 66°F | 36°F | 0" | -- |
Based on 55 years of data from NOAA station: VACAVILLE/NUT TREE AP ASOS
Monthly Climate Averages
Historical temperature and precipitation averages for Vacaville, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.