Castaic climate

Castaic Weather in March

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

Average highs run from 68°F on March 1 to 72°F on March 31, and lows from 46°F to 47°F. Normal precipitation for the month is 2.90 in over about 4 wet days.

March 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.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

March at a glance

Average high
70°F
Average low
47°F
Precipitation
2.90 in
Record high
84°FMar 20, 2026
Record low
14°FMar 3, 1987
Chance of a freeze
5%
Daylight
11 h 28 min to 12 h 32 min
Cloud cover
43%
Humidity
65%
Dew point
38°F
Wind
8.1 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
Mar 168°F46°F76°F 201620°F 197121%0%
Mar 268°F46°F73°F 201315°F 197121%0%
Mar 368°F46°F71°F 199414°F 198720%0%
Mar 469°F46°F69°F 201625°F 194520%0%
Mar 569°F47°F75°F 197222°F 197120%0%
Mar 669°F47°F73°F 197219°F 195619%0%
Mar 769°F47°F75°F 197222°F 201219%0%
Mar 869°F47°F74°F 201521°F 195218%0%
Mar 970°F47°F72°F 200422°F 193518%0%
Mar 1070°F47°F74°F 201722°F 193517%0%
Mar 1170°F47°F80°F 201721°F 195417%0%
Mar 1270°F47°F79°F 200722°F 195016%0%
Mar 1370°F47°F79°F 201722°F 195216%0%
Mar 1471°F47°F82°F 201319°F 194416%0%
Mar 1571°F47°F77°F 201325°F 196315%0%
Mar 1671°F47°F80°F 200725°F 194515%0%
Mar 1771°F47°F79°F 202622°F 196315%0%
Mar 1871°F48°F83°F 202624°F 197314%0%
Mar 1971°F48°F83°F 202620°F 198714%0%
Mar 2071°F48°F84°F 202623°F 195214%0%
Mar 2171°F48°F79°F 200422°F 195213%0%
Mar 2271°F48°F78°F 200422°F 195213%0%
Mar 2371°F48°F75°F 199025°F 196413%0%
Mar 2472°F47°F78°F 202623°F 196412%0%
Mar 2572°F47°F77°F 202222°F 193612%0%
Mar 2672°F47°F77°F 201523°F 197512%0%
Mar 2772°F47°F83°F 201526°F 197512%0%
Mar 2872°F47°F79°F 201522°F 197512%0%
Mar 2972°F47°F82°F 201523°F 196711%0%
Mar 3072°F47°F83°F 201521°F 196711%0%
Mar 3172°F47°F80°F 196625°F 193611%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.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

March 1
sunrise 6:23 AM, sunset 5:51 PM
March 31
sunrise 6:43 AM, sunset 7:15 PM

Every day of March: 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.