Santa Rosa, CA weather in April
Expect mild weather with some rain in Santa Rosa in April, with highs near 70°F and lows near 42°F. Rain falls on about 7 days. Great for outdoor plans.
- Normal high
- 70°F
- Normal low
- 42°F
- Wet days
- 7
- 2.6 in total
- Muggy days
- 0
- dew point 65°F+
How April changes from start to finish
| April 1 | April 30 | |
|---|---|---|
| Normal high | 68°F | 73°F |
| Normal low | 41°F | 44°F |
| Chance of a wet day | 30% | 19% |
| Sunrise / sunset | 6:55 am / 7:33 pm | 6:14 am / 8:01 pm |
| Daylight | 12.6 h | 13.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical April day
- 6 am49°Fdew point 44°F
- 9 am60°Fdew point 46°F
- Noon67°Fdew point 46°F
- 3 pm69°Fdew point 46°F
- 6 pm63°Fdew point 47°F
- 9 pm54°Fdew point 46°F
NOAA hourly normals (local standard time) from Travis AFB (44 mi away); average wind 12 mph; clear or few clouds in 59% of daytime hours, mostly cloudy or overcast in 32%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F20 of 30
- Hot dayshigh 90°F or more1 of 30
- Muggy daysdaily mean dew point 65°F or more0 of 30
- Wet daysat least 0.01 in of rain or melted snow7 of 30
- Notable rainat least 0.10 in5 of 30
- Freezing nightslow 32°F or below2 of 30
Average days per April, counted from daily records for each year 1991-2020.
Rain in April
Normal precipitation is 2.6 in; a dry April brings about 1.2 in and a wet one about 3.1 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more. Snow is very rare.
How April varies from year to year
- Warmest April, 1991-20202013: average high 76°F
- Coolest April2006: average high 65°F
- Wettest April2006: 8.1 in
- Driest April2008: 0.4 in
- Highest reading96°F (April 22, 2009)
- Lowest reading28°F (April 3, 2001)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
April compared with March and May
| March | April | May | |
|---|---|---|---|
| Normal high | 66°F | 70°F | 75°F |
| Normal low | 41°F | 42°F | 46°F |
| Wet days | 11 | 7 | 4 |
| Comfortable days | 17 | 20 | 19 |
| Daylight | 12.0 h | 13.2 h | 14.3 h |
Highs change by +4°F from March and +5°F into May.
Nearby alternatives in April
- Drier: Visalia, CA238 mi · high 73°F · 4 wet days
- Cooler: San Francisco, CA49 mi · high 63°F · 7 wet days
How Santa Rosa ranks in April
- Normal high175th warmest of 378 cities; 42nd of 60 in California
- Wet days145th driest of 378
- Comfortable days12th most of 340
What to pack for Santa Rosa in April
- Layers – afternoons near 70°F but nights near 42°F
Heating and cooling
April has 267 heating degree days and 3 cooling degree days (base 65°F), 8% of the year's total heating and cooling demand.
Questions
How hot is Santa Rosa in April?
The normal high is 70°F and the normal low is 42°F. From 1991 to 2020 the hottest April reading was 96°F (April 22, 2009).
Does it rain a lot in Santa Rosa in April?
About 7 days in April have at least 0.01 in of precipitation, and the normal total is 2.6 in. The wettest April in 1991-2020 was in 2006 (8.1 in); the driest was in 2008 (0.4 in).
Is April a good time to visit Santa Rosa?
April ranks 2nd of 12 months on our comfort score for Santa Rosa (78 out of 100). It has about 20 comfortable days and about 1 day at 90°F or hotter. The best months are April and May.
Where the numbers come from
- Temperature and rain: Graton (USC00043578), 8.2 mi W of the city center, 200 ft . NOAA normals and daily records, 1991-2020.
- Snowfall, snow depth and frost dates: Santa Rosa (USC00047965), 1.1 mi N of the city center, 166 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Travis AFB (USW00023202), 44 mi ESE of the city center, 59 ft (106 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Sonoma County Airport (724957-23213), 6.8 mi NW of the city center, 119 ft . Hourly observations, 1991-2020.