Climateby Month

Fairfield, CA weather in April

NOAA 1991-2020 normals and daily records · Fairfield all year

April in Fairfield: mild and mostly dry. Highs 71°F, lows 48°F, about 5 days with rain. A great month for outdoor plans.

Normal high
71°F
Normal low
48°F
Wet days
5
1.5 in total
Muggy days
0
dew point 65°F+

How April changes from start to finish

Normal values at the start and end of April
April 1April 30
Normal high69°F74°F
Normal low47°F50°F
Chance of a wet day22%15%
Sunrise / sunset6:53 am / 7:30 pm6:12 am / 7:58 pm
Daylight12.6 h13.8 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

  1. 6 am49°Fdew point 44°F
  2. 9 am60°Fdew point 46°F
  3. Noon67°Fdew point 46°F
  4. 3 pm69°Fdew point 46°F
  5. 6 pm63°Fdew point 47°F
  6. 9 pm54°Fdew point 46°F

NOAA hourly normals (local standard time) from Travis AFB (6 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°F19 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 snow5 of 30
  • Notable rainat least 0.10 in3 of 30
  • Freezing nightslow 32°F or below0 of 30

Average days per April, counted from daily records for each year 1991-2020.

Rain in April

Normal precipitation is 1.5 in; a dry April brings about 0.6 in and a wet one about 2.1 in (25th and 75th percentiles). About 1 day brings half an inch or more.

How April varies from year to year

  • Warmest April, 1991-20202013: average high 77°F
  • Coolest April2010: average high 64°F
  • Wettest April2006: 5.0 in
  • Driest April2008: 0.05 in
  • Highest reading97°F (April 22, 2009)
  • Lowest reading26°F (April 8, 2010)

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

MarchAprilMay
Normal high66°F71°F78°F
Normal low45°F48°F52°F
Wet days953
Comfortable days171919
Daylight12.0 h13.2 h14.3 h

Highs change by +5°F from March and +7°F into May.

Nearby alternatives in April

How Fairfield ranks in April

  • Normal high165th warmest of 378 cities; 39th of 60 in California
  • Wet days75th driest of 378
  • Comfortable days23rd most of 340

Heating and cooling

April has 180 heating degree days and 19 cooling degree days (base 65°F), 6% of the year's total heating and cooling demand.

Questions

How hot is Fairfield in April?

The normal high is 71°F and the normal low is 48°F. From 1991 to 2020 the hottest April reading was 97°F (most recently on April 22, 2009).

Does it rain a lot in Fairfield in April?

About 5 days in April have at least 0.01 in of precipitation, and the normal total is 1.5 in. The wettest April in 1991-2020 was in 2006 (5.0 in); the driest was in 2008 (0.05 in).

Is April a good time to visit Fairfield?

April ranks 2nd of 12 months on our comfort score for Fairfield (77 out of 100). It has about 19 comfortable days and about 1 day at 90°F or hotter. The best months are April and May.

Where the numbers come from

  • Temperature, rain, snowfall, snow depth and frost dates: Fairfield (USC00042934), 2.3 mi NW of the city center, 40 ft . NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour and cloud cover: Travis AFB (USW00023202), 5.9 mi ENE of the city center, 59 ft . NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Travis Air Force Base (745160-23202), 5.9 mi ENE of the city center, 62 ft . Hourly observations, 1991-2020.