Jamestown climate

Jamestown Weather in August

NOAA 1991-2020 normals for Jamestown State Hosp, 3.4 km from Jamestown

Average highs run from 82°F on August 1 to 77°F on August 31, and lows from 58°F to 52°F. Normal precipitation for the month is 2.28 in over about 8 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 Jamestown, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
80°F
Average low
56°F
Precipitation
2.28 in
Record high
106°FAug 2, 1982
Record low
32°FAug 27, 1982
Chance of a freeze
0%
Days of 90°F or more
3.1
Daylight
14 h 52 min to 13 h 23 min
Cloud cover
50%
Humidity
60%
Dew point
53°F
Wind
9.8 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 182°F58°F98°F 195845°F 194830%0%
Aug 282°F58°F106°F 198243°F 197129%0%
Aug 382°F58°F103°F 198941°F 197129%0%
Aug 482°F58°F102°F 198342°F 194829%0%
Aug 582°F58°F97°F 195942°F 199228%0%
Aug 682°F58°F101°F 198342°F 198928%0%
Aug 782°F58°F103°F 198345°F 195928%0%
Aug 882°F58°F104°F 195844°F 196428%0%
Aug 982°F57°F106°F 195841°F 195228%0%
Aug 1082°F57°F99°F 198842°F 195427%0%
Aug 1181°F57°F103°F 196938°F 195227%0%
Aug 1281°F57°F102°F 198441°F 196427%0%
Aug 1381°F57°F100°F 196534°F 196427%0%
Aug 1481°F57°F100°F 195234°F 196827%0%
Aug 1581°F56°F97°F 202144°F 197927%0%
Aug 1681°F56°F101°F 198844°F 195127%0%
Aug 1780°F56°F101°F 197339°F 195227%0%
Aug 1880°F56°F104°F 195938°F 200227%0%
Aug 1980°F55°F101°F 195938°F 195027%0%
Aug 2080°F55°F102°F 197634°F 200427%0%
Aug 2180°F55°F101°F 197140°F 200426%0%
Aug 2279°F55°F99°F 196039°F 195126%0%
Aug 2379°F54°F101°F 197640°F 198726%0%
Aug 2479°F54°F98°F 196740°F 200826%0%
Aug 2579°F54°F98°F 198437°F 195026%0%
Aug 2678°F53°F100°F 197638°F 198226%0%
Aug 2778°F53°F103°F 197332°F 198226%0%
Aug 2878°F53°F100°F 198334°F 196526%0%
Aug 2978°F53°F98°F 196139°F 198826%0%
Aug 3077°F52°F95°F 197138°F 200926%0%
Aug 3177°F52°F100°F 195338°F 195826%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Jamestown, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

August 1
sunrise 6:15 AM, sunset 9:07 PM
August 31
sunrise 6:53 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 USC00324418 (Jamestown State Hosp), public domain. Records: NOAA GHCN-Daily, station USW00014919, 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.