Sunnyvale weather in April: Sunnyvale, California: normal highs, lows, rain and records for April
Sunnyvale in April has a normal high of 68°F and a normal low of 49°F, a daily mean of 58°F, rising from 66°F on the 1st to 70°F by the 30th. Measurable precipitation falls on 6 days in a normal April, 0.98 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 20°C and low of 9°C, 25 mm of precipitation in April.
- NOAA stationMoffett Federal Airfield
- Station IDUSW00023244
- Location37.41°N 122.05°W
- Elevation39 ft (12 m)
- From the center2 miles
- Population156,792
- Jan 59° 42°
- Feb 62° 45°
- Mar 65° 47°
- Apr 68° 49°
- May 72° 53°
- Jun 76° 56°
- Jul 77° 59°
- Aug 77° 59°
- Sep 78° 57°
- Oct 74° 53°
- Nov 66° 46°
- Dec 59° 42°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Sunnyvale in April?
The normal high is 68°F and the normal low 49°F, for a daily mean of 58.4°F. April is 2.6°F warmer than March and 3.7°F cooler than May. April is the 7th warmest month of the year in Sunnyvale and the 6th wettest. Across the month the normal high rises 4°F, from 66°F on April 1 to 70°F on April 30. From one year to the next April's mean temperature typically moves about 2.0°F either way (NOAA's standard deviation), so roughly two Aprils in three average between 56°F and 60°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 26%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| April 1 | 66°F | 48°F | 26% | 15% |
| April 8 | 67°F | 48°F | 23% | 13% |
| April 15 | 68°F | 49°F | 20% | 11% |
| April 22 | 69°F | 50°F | 16% | 8% |
| April 30 | 70°F | 51°F | 13% | 6% |
Every day of April: normal high, low and chance of precipitation (warmest afternoon April 30, coldest night April 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| April 1 | 66°F | 48°F | 26% | 15% | 12 h 30 min |
| April 2 | 67°F | 48°F | 25% | 14% | 12 h 40 min |
| April 3 | 67°F | 48°F | 25% | 14% | 12 h 40 min |
| April 4 | 67°F | 48°F | 25% | 14% | 12 h 40 min |
| April 5 | 67°F | 48°F | 24% | 14% | 12 h 40 min |
| April 6 | 67°F | 48°F | 24% | 14% | 12 h 50 min |
| April 7 | 67°F | 48°F | 24% | 13% | 12 h 50 min |
| April 8 | 67°F | 48°F | 23% | 13% | 12 h 50 min |
| April 9 | 67°F | 48°F | 23% | 13% | 12 h 50 min |
| April 10 | 67°F | 48°F | 22% | 12% | 13 h |
| April 11 | 67°F | 48°F | 22% | 12% | 13 h |
| April 12 | 68°F | 49°F | 21% | 12% | 13 h |
| April 13 | 68°F | 49°F | 21% | 11% | 13 h |
| April 14 | 68°F | 49°F | 20% | 11% | 13 h |
| April 15 | 68°F | 49°F | 20% | 11% | 13 h 10 min |
| April 16 | 68°F | 49°F | 19% | 10% | 13 h 10 min |
| April 17 | 68°F | 49°F | 19% | 10% | 13 h 10 min |
| April 18 | 68°F | 49°F | 18% | 9% | 13 h 10 min |
| April 19 | 68°F | 49°F | 18% | 9% | 13 h 20 min |
| April 20 | 69°F | 49°F | 17% | 9% | 13 h 20 min |
| April 21 | 69°F | 49°F | 17% | 8% | 13 h 20 min |
| April 22 | 69°F | 50°F | 16% | 8% | 13 h 20 min |
| April 23 | 69°F | 50°F | 16% | 8% | 13 h 30 min |
| April 24 | 69°F | 50°F | 15% | 8% | 13 h 30 min |
| April 25 | 69°F | 50°F | 15% | 7% | 13 h 30 min |
| April 26 | 69°F | 50°F | 14% | 7% | 13 h 30 min |
| April 27 | 69°F | 50°F | 14% | 7% | 13 h 30 min |
| April 28 | 70°F | 50°F | 14% | 7% | 13 h 40 min |
| April 29 | 70°F | 50°F | 13% | 6% | 13 h 40 min |
| April 30 | 70°F | 51°F | 13% | 6% | 13 h 40 min |
- Normal high
- 68°FApril average
- Normal low
- 49°FApril average
- Precipitation
- 0.98 inmonth total
- Days with precipitation
- 60.01 inch or more
- Daylight
- 12 h 30 min to 13 h 40 minApril 1 to April 30
- Days at 70°F or more
- 11
- Days at 80°F or more
- 3
- Sunshine
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023244; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Sunnyvale in April?
On a given April day the chance of 0.01 inch or more is 19% on average, highest around April 1 (26%). In all, 0.98 in falls on 6 days of a normal April.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023244.
What are the records for April in Sunnyvale?
The warmest April temperature on this station's record (since 1945) is 95°F, on April 29, 1981; the coldest is 32°F, on April 5, 1945. The wettest April brought 3.98 in (1967).
The April mean against the 1991-2020 normal of 58.4°F: 2025 58.5°F (+0.1), 2026 60.2°F (+1.8). 2 of 2 ran warmer than normal.
| April | Mean | Against normal | Precip. |
|---|---|---|---|
| 2025 | 58.5°F | +0.1°F | – |
| 2026 | 60.2°F | +1.8°F | – |
Source: records: ACIS, station USW00023244; recent months: ACIS, station USW00023244. Records and recent months use complete months only.
How does April in Sunnyvale compare across California?
Across the 219 places PlainClimate covers in California, April normal highs run from 49°F in Tahoma to 87°F in Brawley; Sunnyvale's is 68°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.