Climateby Month

Hayward, CA weather in April

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

Hayward is mild in April, with some rain: highs average 66°F and nights drop to about 49°F. There are about 7 days with rain. A good month for most outdoor plans.

Normal high
66°F
Normal low
49°F
Wet days
7
1.9 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 high64°F67°F
Normal low48°F50°F
Chance of a wet day27%17%
Sunrise / sunset6:53 am / 7:30 pm6:13 am / 7:57 pm
Daylight12.6 h13.7 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 am51°Fdew point 46°F
  2. 9 am57°Fdew point 47°F
  3. Noon62°Fdew point 47°F
  4. 3 pm64°Fdew point 48°F
  5. 6 pm59°Fdew point 48°F
  6. 9 pm55°Fdew point 48°F

NOAA hourly normals (local standard time) from Oakland Metro Intl Airport (9 mi away); average wind 10 mph; clear or few clouds in 38% of daytime hours, mostly cloudy or overcast in 42%.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F12 of 30
  • Hot dayshigh 90°F or more0 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 in4 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 1.9 in; a dry April brings about 0.9 in and a wet one about 2.5 in (25th and 75th percentiles). About 1 day brings half an inch or more.

How April varies from year to year

  • Warmest April, 1991-20201992: average high 69°F
  • Coolest April2003: average high 60°F
  • Wettest April2006: 5.4 in
  • Driest April2004: 0.3 in
  • Highest reading91°F (April 20, 2009)
  • Lowest reading39°F (April 9, 1999)

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 high63°F66°F68°F
Normal low48°F49°F52°F
Wet days1174
Comfortable days91218
Daylight12.0 h13.2 h14.2 h

Highs change by +3°F from March and +2°F into May.

Nearby alternatives in April

How Hayward ranks in April

  • Normal high210th warmest of 378 cities; 52nd of 60 in California
  • Wet days111th driest of 378
  • Comfortable days163rd most of 340

Heating and cooling

April has 234 heating degree days and 5 cooling degree days (base 65°F), 9% of the year's total heating and cooling demand.

Questions

How cold is Hayward in April?

The normal high is 66°F and the normal low is 49°F. From 1991 to 2020 the coldest April reading was 39°F (April 9, 1999).

Does it rain a lot in Hayward in April?

About 7 days in April have at least 0.01 in of precipitation, and the normal total is 1.9 in. The wettest April in 1991-2020 was in 2006 (5.4 in); the driest was in 2004 (0.3 in).

Is April a good time to visit Hayward?

April ranks 7th of 12 months on our comfort score for Hayward (68 out of 100). It has about 12 comfortable days. The best months are July and August.

Where the numbers come from

  • Temperature and cloud cover: San Francisco Intl Airport (USW00023234), 16 mi WSW of the city center, 8 ft (98 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Rain: Upper San Leandro Filters (USC00049185), 8.6 mi NNW of the city center, 394 ft (288 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Snowfall and snow depth: Newark (USC00046144), 11 mi SSE of the city center, 10 ft (96 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Frost dates: Hayward Air Terminal (USW00093228), 2.1 mi WSW of the city center, 43 ft (63 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour: Oakland Metro Intl Airport (USW00023230), 8.5 mi WNW of the city center, 6 ft (100 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: San Francisco International Airport (724940-23234), 16 mi WSW of the city center, 10 ft (96 ft lower than the city). Hourly observations, 1991-2020.