San Rafael weather in April: San Rafael, California: normal highs, lows, rain and records for April
San Rafael in April has a normal high of 68°F and a normal low of 48°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, 1.99 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 20°C and low of 9°C, 51 mm of precipitation in April.
- NOAA stationSan Rafael Civic Center
- Station IDUSC00047880
- Location38.00°N 122.54°W
- Elevation120 ft (37 m)
- From the center2 miles
- Population59,961
- Jan 57° 43°
- Feb 61° 44°
- Mar 65° 46°
- Apr 68° 48°
- May 72° 51°
- Jun 78° 54°
- Jul 81° 55°
- Aug 81° 56°
- Sep 81° 54°
- Oct 75° 51°
- Nov 65° 46°
- Dec 57° 42°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is San Rafael in April?
The normal high is 68°F and the normal low 48°F, for a daily mean of 57.7°F. April is 2.5°F warmer than March and 3.6°F cooler than May. April is the 7th warmest month of the year in San Rafael 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 2.1°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 27%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| April 1 | 66°F | 47°F | 27% | 17% |
| April 8 | 67°F | 47°F | 25% | 15% |
| April 15 | 68°F | 47°F | 22% | 13% |
| April 22 | 69°F | 48°F | 19% | 11% |
| April 30 | 70°F | 49°F | 15% | 9% |
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 | 47°F | 27% | 17% | 12 h 40 min |
| April 2 | 66°F | 47°F | 27% | 17% | 12 h 40 min |
| April 3 | 66°F | 47°F | 27% | 17% | 12 h 40 min |
| April 4 | 67°F | 47°F | 26% | 16% | 12 h 40 min |
| April 5 | 67°F | 47°F | 26% | 16% | 12 h 40 min |
| April 6 | 67°F | 47°F | 26% | 16% | 12 h 50 min |
| April 7 | 67°F | 47°F | 25% | 16% | 12 h 50 min |
| April 8 | 67°F | 47°F | 25% | 15% | 12 h 50 min |
| April 9 | 67°F | 47°F | 25% | 15% | 12 h 50 min |
| April 10 | 67°F | 47°F | 24% | 15% | 13 h |
| April 11 | 67°F | 47°F | 24% | 14% | 13 h |
| April 12 | 67°F | 47°F | 23% | 14% | 13 h |
| April 13 | 68°F | 47°F | 23% | 14% | 13 h |
| April 14 | 68°F | 47°F | 22% | 13% | 13 h 10 min |
| April 15 | 68°F | 47°F | 22% | 13% | 13 h 10 min |
| April 16 | 68°F | 48°F | 21% | 13% | 13 h 10 min |
| April 17 | 68°F | 48°F | 21% | 12% | 13 h 10 min |
| April 18 | 68°F | 48°F | 20% | 12% | 13 h 20 min |
| April 19 | 68°F | 48°F | 20% | 12% | 13 h 20 min |
| April 20 | 68°F | 48°F | 20% | 11% | 13 h 20 min |
| April 21 | 68°F | 48°F | 19% | 11% | 13 h 20 min |
| April 22 | 69°F | 48°F | 19% | 11% | 13 h 20 min |
| April 23 | 69°F | 48°F | 18% | 10% | 13 h 30 min |
| April 24 | 69°F | 48°F | 18% | 10% | 13 h 30 min |
| April 25 | 69°F | 48°F | 17% | 10% | 13 h 30 min |
| April 26 | 69°F | 48°F | 17% | 10% | 13 h 30 min |
| April 27 | 69°F | 48°F | 17% | 10% | 13 h 40 min |
| April 28 | 69°F | 49°F | 16% | 9% | 13 h 40 min |
| April 29 | 69°F | 49°F | 16% | 9% | 13 h 40 min |
| April 30 | 70°F | 49°F | 15% | 9% | 13 h 40 min |
- Normal high
- 68°FApril average
- Normal low
- 48°FApril average
- Precipitation
- 1.99 inmonth total
- Days with precipitation
- 60.01 inch or more
- Daylight
- 12 h 40 min to 13 h 40 minApril 1 to April 30
- Days at 70°F or more
- 10
- Days at 80°F or more
- 3
- Sunshine
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00047880; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in San Rafael in April?
On a given April day the chance of 0.01 inch or more is 21% on average, highest around April 1 (27%). In all, 1.99 in falls on 6 days of a normal April, 1 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00047880.
What are the records for April in San Rafael?
The warmest April temperature on this station's record (since 1894) is 92°F, on April 30, 1996; the coldest is 28°F, on April 24, 1894. The wettest April brought 8.27 in (1958).
The April mean against the 1991-2020 normal of 57.7°F: 2021 59.5°F (+1.8), 2023 58.9°F (+1.2), 2024 58.5°F (+0.8), 2025 59.4°F (+1.7), 2026 59.5°F (+1.8). 5 of 5 ran warmer than normal.
| April | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 59.5°F | +1.8°F | 0.03 in |
| 2023 | 58.9°F | +1.2°F | 0.34 in |
| 2024 | 58.5°F | +0.8°F | 0.90 in |
| 2025 | 59.4°F | +1.7°F | 0.37 in |
| 2026 | 59.5°F | +1.8°F | 3.66 in |
Source: records: ACIS, station USC00047880; recent months: ACIS, station USC00047880. Records and recent months use complete months only.
How does April in San Rafael 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; San Rafael's is 68°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.