Castle Hills climate

Castle Hills Weather in April

NOAA 1991-2020 normals for San Antonio Intl AP, 3.9 km from Castle Hills

Average highs run from 78°F on April 1 to 83°F on April 30, and lows from 55°F to 62°F. Normal precipitation for the month is 2.42 in over about 6 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 Castle Hills, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

April at a glance

Average high
80°F
Average low
58°F
Precipitation
2.42 in
Record high
101°FApr 19, 1996
Record low
31°FApr 3, 1987
Chance of a freeze
0%
Days of 90°F or more
3.2
Daylight
12 h 30 min to 13 h 17 min
Cloud cover
59%
Humidity
66%
Dew point
55°F
Wind
10.5 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 178°F55°F93°F 201136°F 198724%0%
Apr 278°F56°F92°F 198237°F 201924%0%
Apr 378°F56°F97°F 198931°F 198724%0%
Apr 478°F56°F91°F 202533°F 198724%0%
Apr 579°F56°F95°F 202239°F 194923%0%
Apr 679°F56°F94°F 194834°F 196623%0%
Apr 779°F57°F99°F 200635°F 197123%0%
Apr 879°F57°F98°F 198935°F 200723%0%
Apr 979°F57°F99°F 196333°F 198323%0%
Apr 1079°F57°F95°F 196337°F 197323%0%
Apr 1180°F57°F96°F 194837°F 198823%0%
Apr 1280°F58°F94°F 194836°F 195123%0%
Apr 1380°F58°F100°F 198236°F 195923%0%
Apr 1480°F58°F95°F 196133°F 198023%0%
Apr 1580°F58°F95°F 200638°F 198022%0%
Apr 1680°F58°F94°F 200635°F 196122%0%
Apr 1781°F59°F99°F 200637°F 194723%0%
Apr 1881°F59°F100°F 200642°F 194723%0%
Apr 1981°F59°F101°F 199643°F 195323%0%
Apr 2081°F59°F100°F 198441°F 201323%0%
Apr 2181°F60°F94°F 199543°F 195323%0%
Apr 2281°F60°F96°F 196343°F 199323%0%
Apr 2382°F60°F98°F 200045°F 195923%0%
Apr 2482°F60°F98°F 202041°F 199523%0%
Apr 2582°F61°F98°F 199641°F 196823%0%
Apr 2682°F61°F97°F 198448°F 197723%0%
Apr 2782°F61°F99°F 201448°F 195223%0%
Apr 2882°F61°F99°F 201447°F 200823%0%
Apr 2983°F62°F94°F 198446°F 196524%0%
Apr 3083°F62°F96°F 195340°F 199624%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Castle Hills, 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 (CDT).

April 1
sunrise 7:23 AM, sunset 7:53 PM
April 30
sunrise 6:53 AM, sunset 8:10 PM

Every day of April: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00012921 (San Antonio Intl AP), public domain. Records: NOAA GHCN-Daily, station USW00012921, 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.