Castaic climate

Castaic Weather in April

NOAA 1991-2020 normals for Newhall 5NW, 11 km from Castaic

Average highs run from 72°F on April 1 to 77°F on April 30, and lows from 47°F to 51°F. Normal precipitation for the month is 0.83 in over about 3 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 Castaic, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

April at a glance

Average high
74°F
Average low
49°F
Precipitation
0.83 in
Record high
86°FApr 7, 1989
Record low
22°FApr 8, 2011
Chance of a freeze
1%
Days of 90°F or more
1.6
Daylight
12 h 35 min to 13 h 33 min
Cloud cover
36%
Humidity
59%
Dew point
39°F
Wind
8.5 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 172°F47°F82°F 196624°F 196711%0%
Apr 272°F47°F79°F 196124°F 194511%0%
Apr 372°F47°F83°F 196124°F 199910%0%
Apr 472°F47°F78°F 196024°F 199910%0%
Apr 572°F47°F80°F 196025°F 196710%0%
Apr 673°F47°F83°F 198925°F 197510%0%
Apr 773°F47°F86°F 198924°F 197510%0%
Apr 873°F48°F85°F 198922°F 201110%0%
Apr 973°F48°F83°F 198923°F 199910%0%
Apr 1073°F48°F80°F 201425°F 196510%0%
Apr 1173°F48°F82°F 198924°F 19659%0%
Apr 1273°F48°F81°F 201525°F 19679%0%
Apr 1374°F48°F80°F 199026°F 19729%0%
Apr 1474°F48°F80°F 198525°F 19709%0%
Apr 1574°F48°F80°F 194727°F 19769%0%
Apr 1674°F48°F81°F 198724°F 19768%0%
Apr 1774°F49°F81°F 199425°F 19638%0%
Apr 1874°F49°F83°F 198926°F 19718%0%
Apr 1975°F49°F81°F 195022°F 19678%0%
Apr 2075°F49°F82°F 199423°F 19678%0%
Apr 2175°F49°F83°F 201222°F 19717%0%
Apr 2275°F50°F84°F 201725°F 19677%0%
Apr 2376°F50°F85°F 194926°F 19647%0%
Apr 2476°F50°F81°F 194625°F 19647%0%
Apr 2576°F50°F83°F 202027°F 19717%0%
Apr 2676°F50°F83°F 201326°F 19757%0%
Apr 2777°F51°F84°F 201327°F 19376%0%
Apr 2877°F51°F86°F 200724°F 19676%0%
Apr 2977°F51°F85°F 201525°F 19676%0%
Apr 3077°F51°F86°F 202126°F 19676%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Castaic, in percent, and of at least 0.1 inch of snowfall.02.557.51012.51102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

April 1
sunrise 6:41 AM, sunset 7:16 PM
April 30
sunrise 6:05 AM, sunset 7:38 PM

Every day of April: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00046161 (Newhall 5NW), public domain. Records: NOAA GHCN-Daily, station USW00023187, 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.