Flathead County climate

Flathead County Weather in August

NOAA 1991-2020 normals for Hungry Horse Dam, 5.7 km from Flathead County

Average highs run from 85°F on August 1 to 76°F on August 31, and lows from 55°F to 48°F. Normal precipitation for the month is 1.23 in over about 6 wet days.

August day by day

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

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

August at a glance

Average high
81°F
Average low
52°F
Precipitation
1.23 in
Record high
105°FAug 4, 1961
Record low
30°FAug 25, 1910
Chance of a freeze
4%
Days of 90°F or more
6.3
Daylight
15 h 01 min to 13 h 26 min
Cloud cover
49%
Humidity
61%
Dew point
42°F
Wind
4.5 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
Aug 185°F55°F101°F 201537°F 195317%0%
Aug 285°F55°F99°F 196136°F 196317%0%
Aug 385°F55°F101°F 196138°F 190017%0%
Aug 485°F54°F105°F 196132°F 189617%0%
Aug 585°F54°F103°F 196138°F 202617%0%
Aug 685°F54°F95°F 196337°F 198017%0%
Aug 785°F54°F96°F 198335°F 196917%0%
Aug 884°F54°F98°F 193037°F 191717%0%
Aug 984°F54°F98°F 200035°F 191418%0%
Aug 1084°F54°F100°F 201837°F 194718%0%
Aug 1183°F53°F98°F 197138°F 199718%0%
Aug 1283°F53°F97°F 197135°F 200018%0%
Aug 1383°F53°F97°F 201534°F 200518%0%
Aug 1483°F53°F96°F 199233°F 194919%0%
Aug 1582°F52°F98°F 202136°F 201719%0%
Aug 1682°F52°F98°F 196235°F 190519%0%
Aug 1781°F52°F100°F 202332°F 196919%0%
Aug 1881°F52°F99°F 200833°F 197319%0%
Aug 1981°F51°F97°F 196734°F 199619%0%
Aug 2080°F51°F96°F 189832°F 200020%0%
Aug 2180°F51°F95°F 196933°F 196620%0%
Aug 2280°F51°F96°F 196933°F 200020%0%
Aug 2379°F50°F98°F 196931°F 196220%0%
Aug 2479°F50°F103°F 196933°F 199221%0%
Aug 2578°F50°F99°F 198130°F 191021%0%
Aug 2678°F49°F98°F 198132°F 199121%0%
Aug 2778°F49°F95°F 197133°F 199521%0%
Aug 2877°F49°F93°F 198630°F 200022%0%
Aug 2977°F49°F95°F 197231°F 196922%0%
Aug 3076°F48°F94°F 192931°F 195922%0%
Aug 3176°F48°F92°F 192931°F 199922%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Flathead County, 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 (MDT).

August 1
sunrise 6:12 AM, sunset 9:13 PM
August 31
sunrise 6:53 AM, sunset 8:19 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00244328 (Hungry Horse Dam), public domain. Records: NOAA GHCN-Daily, station USC00244558, 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.