Ravalli County climate

Ravalli County Weather in August

NOAA 1991-2020 normals for Darby, 7.5 km from Ravalli County

Average highs run from 84°F on August 1 to 76°F on August 31, and lows from 51°F to 45°F. Normal precipitation for the month is 0.90 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 Ravalli County, in °F, with the record for each date.020406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
81°F
Average low
48°F
Precipitation
0.90 in
Record high
103°FAug 24, 1969
Record low
19°FAug 18, 1895
Chance of a freeze
6%
Days of 90°F or more
8.0
Daylight
14 h 47 min to 13 h 20 min
Cloud cover
44%
Humidity
56%
Dew point
40°F
Wind
4.0 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 184°F51°F101°F 190039°F 198717%0%
Aug 284°F50°F99°F 196636°F 198717%0%
Aug 384°F50°F101°F 196138°F 198817%0%
Aug 484°F50°F101°F 196140°F 195617%0%
Aug 584°F50°F101°F 196137°F 198017%0%
Aug 684°F50°F100°F 190138°F 190917%0%
Aug 783°F50°F98°F 195836°F 198818%0%
Aug 883°F49°F100°F 193039°F 194618%0%
Aug 983°F49°F100°F 193539°F 191418%0%
Aug 1083°F49°F101°F 200340°F 191718%0%
Aug 1182°F49°F99°F 199638°F 190118%0%
Aug 1282°F49°F101°F 194035°F 189918%0%
Aug 1382°F48°F99°F 193536°F 190018%0%
Aug 1481°F48°F101°F 192938°F 192818%0%
Aug 1581°F48°F100°F 192936°F 197418%0%
Aug 1681°F48°F98°F 193129°F 189518%0%
Aug 1781°F47°F99°F 193124°F 189518%0%
Aug 1880°F47°F96°F 193119°F 189519%0%
Aug 1980°F47°F99°F 200819°F 189519%0%
Aug 2080°F47°F96°F 194228°F 189519%
Aug 2179°F47°F98°F 196930°F 189519%
Aug 2279°F46°F98°F 193522°F 189519%
Aug 2379°F46°F102°F 193528°F 189519%
Aug 2478°F46°F103°F 196928°F 189519%
Aug 2578°F46°F97°F 196926°F 189519%
Aug 2678°F45°F95°F 201022°F 189519%
Aug 2777°F45°F97°F 201024°F 189519%
Aug 2877°F45°F95°F 201119°F 189519%
Aug 2977°F45°F98°F 199821°F 189519%
Aug 3076°F45°F96°F 192127°F 189520%
Aug 3176°F45°F96°F 192927°F 189520%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Ravalli County, in percent, and of at least 0.1 inch of snowfall.051015201102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

August 1
sunrise 6:19 AM, sunset 9:06 PM
August 31
sunrise 6:56 AM, sunset 8:16 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00242221 (Darby), public domain. Records: NOAA GHCN-Daily, station USC00243885, 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.