Custer County climate

Custer County Weather in June

NOAA 1991-2020 normals for Challis AP, 31.8 km from Custer County

Average highs run from 71°F on June 1 to 82°F on June 30, and lows from 44°F to 49°F. Normal precipitation for the month is 0.93 in over about 8 wet days.

June day by day

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

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

June at a glance

Average high
76°F
Average low
46°F
Precipitation
0.93 in
Record high
100°FJun 28, 2015
Record low
29°FJun 7, 2012
Chance of a freeze
11%
Days of 90°F or more
3.0
Daylight
15 h 18 min to 15 h 28 min
Cloud cover
57%
Humidity
60%
Dew point
33°F
Wind
5.6 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation.

DateNormal highNormal lowRecord highRecord lowChance wet
Jun 171°F44°F90°F 200131°F 200029%
Jun 271°F44°F92°F 202137°F 201829%
Jun 371°F44°F93°F 202136°F 200129%
Jun 472°F45°F95°F 202131°F 201129%
Jun 572°F45°F91°F 200032°F 200128%
Jun 672°F45°F88°F 200637°F 200128%
Jun 772°F45°F90°F 200029°F 201228%
Jun 873°F45°F92°F 201632°F 200228%
Jun 973°F45°F92°F 202530°F 199927%
Jun 1073°F45°F93°F 201332°F 201127%
Jun 1174°F46°F87°F 202431°F 201227%
Jun 1274°F46°F89°F 201934°F 201826%
Jun 1374°F46°F96°F 202133°F 200126%
Jun 1475°F46°F97°F 202131°F 200125%
Jun 1575°F46°F91°F 202134°F 201425%
Jun 1675°F46°F91°F 200236°F 201625%
Jun 1776°F46°F91°F 200334°F 202024%
Jun 1876°F47°F93°F 202131°F 202424%
Jun 1977°F47°F94°F 202532°F 202424%
Jun 2077°F47°F93°F 201633°F 202323%
Jun 2177°F47°F93°F 202133°F 201923%
Jun 2278°F47°F95°F 200133°F 202322%
Jun 2378°F47°F92°F 202435°F 200322%
Jun 2479°F48°F90°F 201240°F 202522%
Jun 2579°F48°F93°F 202436°F 201621%
Jun 2680°F48°F98°F 201537°F 199921%
Jun 2780°F48°F95°F 201534°F 201221%
Jun 2881°F48°F100°F 201540°F 199920%
Jun 2981°F49°F98°F 202141°F 201420%
Jun 3082°F49°F98°F 202142°F 202020%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Custer County, in percent.01020301102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (MDT).

June 1
sunrise 5:56 AM, sunset 9:14 PM
June 30
sunrise 5:57 AM, sunset 9:25 PM

Every day of June: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00004114 (Challis AP), public domain. Records: NOAA GHCN-Daily, station USW00004114, 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.