Blackhawk climate

Blackhawk Weather in April

NOAA 1991-2020 normals for Mt Diablo Junction, 6.8 km from Blackhawk

Average highs run from 60°F on April 1 to 65°F on April 30, and lows from 43°F to 47°F. Normal precipitation for the month is 1.92 in over about 7 wet days.

April day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Blackhawk, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

April at a glance

Average high
62°F
Average low
44°F
Precipitation
1.92 in
Record high
97°FApr 7, 2022
Record low
29°FApr 1, 1976
Chance of a freeze
23%
Daylight
12 h 38 min to 13 h 44 min
Cloud cover
44%
Humidity
75%
Dew point
46°F
Wind
8.7 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Apr 160°F43°F88°F 202129°F 197628%0%
Apr 260°F43°F88°F 200030°F 197627%0%
Apr 360°F43°F85°F 195931°F 194527%0%
Apr 460°F43°F87°F 195931°F 202327%0%
Apr 560°F43°F86°F 202632°F 194526%0%
Apr 661°F43°F89°F 193930°F 196426%0%
Apr 761°F43°F97°F 202230°F 192926%0%
Apr 861°F44°F92°F 202233°F 197126%0%
Apr 961°F44°F93°F 198930°F 193325%0%
Apr 1061°F44°F91°F 190831°F 192925%0%
Apr 1161°F44°F93°F 190830°F 190325%0%
Apr 1261°F44°F88°F 190430°F 191124%0%
Apr 1362°F44°F92°F 200831°F 191124%0%
Apr 1462°F44°F94°F 198532°F 191923%0%
Apr 1562°F44°F90°F 194732°F 192223%0%
Apr 1662°F44°F90°F 196431°F 192223%0%
Apr 1762°F44°F90°F 196631°F 196322%0%
Apr 1862°F45°F90°F 193930°F 193322%0%
Apr 1963°F45°F91°F 195432°F 197922%0%
Apr 2063°F45°F94°F 200932°F 197221%0%
Apr 2163°F45°F94°F 200930°F 196821%0%
Apr 2263°F45°F94°F 191033°F 191220%0%
Apr 2363°F45°F95°F 191032°F 196420%0%
Apr 2463°F45°F93°F 191029°F 196420%0%
Apr 2564°F46°F92°F 200429°F 194220%0%
Apr 2664°F46°F93°F 200435°F 196419%0%
Apr 2764°F46°F95°F 200433°F 195519%0%
Apr 2864°F46°F94°F 202329°F 197019%0%
Apr 2964°F46°F96°F 198133°F 197018%0%
Apr 3065°F47°F95°F 198133°F 191318%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Blackhawk, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

April 1
sunrise 6:53 AM, sunset 7:31 PM
April 30
sunrise 6:13 AM, sunset 7:57 PM

Every day of April: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00045915 (Mt Diablo Junction), public domain. Records: NOAA GHCN-Daily, station USC00044997, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.