Crestline climate

Crestline Weather in May

NOAA 1991-2020 normals for Lake Arrowhead, 9 km from Crestline

Average highs run from 63°F on May 1 to 72°F on May 31, and lows from 39°F to 44°F. Normal precipitation for the month is 1.15 in over about 2 wet days.

May day by day

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

Normal daily high and low temperature at Crestline, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
67°F
Average low
41°F
Precipitation
1.15 in
Snowfall
0.8 in
Record high
109°FMay 29, 1984
Record low
33°FMay 10, 1922
Chance of a freeze
56%
Daylight
13 h 35 min to 14 h 16 min
Cloud cover
26%
Humidity
56%
Dew point
44°F
Wind
6.3 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
May 163°F39°F96°F 194738°F 19139%1%
May 263°F39°F101°F 196635°F 19139%1%
May 363°F39°F102°F 200436°F 19389%1%
May 463°F39°F99°F 198739°F 19388%1%
May 564°F39°F104°F 199038°F 19208%1%
May 664°F39°F101°F 198739°F 19758%1%
May 764°F39°F99°F 192338°F 19338%1%
May 864°F40°F100°F 192337°F 19308%1%
May 965°F40°F99°F 192338°F 19307%1%
May 1065°F40°F102°F 193433°F 19227%1%
May 1165°F40°F102°F 196039°F 19227%1%
May 1266°F40°F104°F 201340°F 19057%1%
May 1366°F40°F105°F 192741°F 19077%1%
May 1466°F40°F103°F 192743°F 19426%1%
May 1567°F40°F99°F 190542°F 19556%1%
May 1667°F41°F103°F 197040°F 19336%0%
May 1767°F41°F103°F 200844°F 18996%0%
May 1868°F41°F103°F 200841°F 19776%0%
May 1968°F41°F100°F 200841°F 19235%0%
May 2068°F41°F103°F 194239°F 19485%0%
May 2169°F41°F105°F 196739°F 19485%0%
May 2269°F42°F99°F 200541°F 19035%0%
May 2369°F42°F100°F 200141°F 19605%0%
May 2470°F42°F97°F 193843°F 19035%0%
May 2570°F42°F100°F 198638°F 19804%0%
May 2670°F42°F104°F 197438°F 19534%0%
May 2771°F43°F103°F 196838°F 19534%0%
May 2871°F43°F107°F 200341°F 18994%0%
May 2971°F43°F109°F 198443°F 19094%0%
May 3072°F43°F101°F 191041°F 19214%0%
May 3172°F44°F105°F 191043°F 19213%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Crestline, in percent, and of at least 0.1 inch of snowfall.02468101102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

May 1
sunrise 5:59 AM, sunset 7:34 PM
May 31
sunrise 5:39 AM, sunset 7:55 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00044671 (Lake Arrowhead), public domain. Records: NOAA GHCN-Daily, station USC00047306, 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.