Sunnyvale Weather in April
Average highs run from 66°F on April 1 to 70°F on April 30, and lows from 48°F to 51°F. Normal precipitation for the month is 0.98 in over about 6 wet days.
April day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
April at a glance
- Average high
- 68°F
- Average low
- 49°F
- Precipitation
- 0.98 in
- Record high
- 95°FApr 9, 1989
- Record low
- 32°FApr 4, 1945
- Chance of a freeze
- 0%
- Daylight
- 12 h 38 min to 13 h 43 min
- Cloud cover
- 42%
- Humidity
- 79%
- Dew point
- 46°F
- Wind
- 7.8 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Apr 1 | 66°F | 48°F | 83°F 2000 | 36°F 1951 | 26% |
| Apr 2 | 67°F | 48°F | 86°F 1985 | 38°F 1946 | 25% |
| Apr 3 | 67°F | 48°F | 83°F 1990 | 37°F 1946 | 25% |
| Apr 4 | 67°F | 48°F | 85°F 1985 | 32°F 1945 | 25% |
| Apr 5 | 67°F | 48°F | 89°F 1989 | 32°F 1945 | 24% |
| Apr 6 | 67°F | 48°F | 92°F 1989 | 38°F 1955 | 24% |
| Apr 7 | 67°F | 48°F | 93°F 1989 | 34°F 1948 | 24% |
| Apr 8 | 67°F | 48°F | 93°F 1989 | 38°F 2001 | 23% |
| Apr 9 | 67°F | 48°F | 95°F 1989 | 36°F 1945 | 23% |
| Apr 10 | 67°F | 48°F | 87°F 1988 | 39°F 1999 | 22% |
| Apr 11 | 67°F | 48°F | 85°F 1988 | 36°F 1986 | 22% |
| Apr 12 | 68°F | 49°F | 87°F 2008 | 36°F 1945 | 21% |
| Apr 13 | 68°F | 49°F | 88°F 1985 | 39°F 1961 | 21% |
| Apr 14 | 68°F | 49°F | 85°F 1947 | 38°F 2001 | 20% |
| Apr 15 | 68°F | 49°F | 84°F 1966 | 35°F 1955 | 20% |
| Apr 16 | 68°F | 49°F | 86°F 1987 | 36°F 1955 | 19% |
| Apr 17 | 68°F | 49°F | 84°F 2016 | 38°F 1975 | 19% |
| Apr 18 | 68°F | 49°F | 86°F 2016 | 42°F 1948 | 18% |
| Apr 19 | 68°F | 49°F | 88°F 2009 | 40°F 1955 | 18% |
| Apr 20 | 69°F | 49°F | 93°F 2009 | 37°F 1967 | 17% |
| Apr 21 | 69°F | 49°F | 90°F 2009 | 39°F 2001 | 17% |
| Apr 22 | 69°F | 50°F | 88°F 2013 | 40°F 1945 | 16% |
| Apr 23 | 69°F | 50°F | 89°F 2019 | 38°F 1986 | 16% |
| Apr 24 | 69°F | 50°F | 86°F 2019 | 38°F 1960 | 15% |
| Apr 25 | 69°F | 50°F | 88°F 2004 | 38°F 1958 | 15% |
| Apr 26 | 69°F | 50°F | 92°F 2004 | 40°F 1958 | 14% |
| Apr 27 | 69°F | 50°F | 92°F 2004 | 38°F 1949 | 14% |
| Apr 28 | 70°F | 50°F | 91°F 1981 | 38°F 1955 | 14% |
| Apr 29 | 70°F | 50°F | 95°F 1981 | 39°F 1948 | 13% |
| Apr 30 | 70°F | 51°F | 91°F 2014 | 38°F 1946 | 13% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PDT).
- April 1
- sunrise 6:53 AM, sunset 7:31 PM
- April 30
- sunrise 6:14 AM, sunset 7:57 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00023244 (Moffett Federal Airfield), public domain. Records: NOAA GHCN-Daily, station USW00023244, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.