Grainger County climate

Grainger County Weather in August

NOAA 1991-2020 normals for Morristown WFO, 15.4 km from Grainger County

Average highs run from 86°F on August 1 to 84°F on August 31, and lows from 68°F to 65°F. Normal precipitation for the month is 2.97 in over about 10 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 Grainger County, in °F, with the record for each date.5060708090100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
85°F
Average low
67°F
Precipitation
2.97 in
Record high
97°FAug 23, 2007
Record low
52°FAug 27, 2025
Chance of a freeze
0%
Days of 90°F or more
5.9
Daylight
13 h 58 min to 12 h 58 min
Cloud cover
55%
Humidity
70%
Dew point
63°F
Wind
3.1 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 186°F68°F93°F 200658°F 199737%0%
Aug 286°F68°F94°F 200260°F 199636%0%
Aug 386°F68°F96°F 200260°F 200936%0%
Aug 486°F68°F95°F 200263°F 199836%0%
Aug 586°F68°F94°F 200261°F 201735%0%
Aug 686°F68°F91°F 200658°F 199735%0%
Aug 786°F68°F92°F 200653°F 200435%0%
Aug 886°F68°F92°F 200757°F 200435%0%
Aug 986°F68°F93°F 200761°F 200434%0%
Aug 1086°F68°F93°F 200660°F 200834%0%
Aug 1186°F67°F93°F 202159°F 200834%0%
Aug 1286°F67°F92°F 200559°F 200833%0%
Aug 1385°F67°F94°F 199959°F 200433%0%
Aug 1485°F67°F93°F 202158°F 200433%0%
Aug 1585°F67°F93°F 199559°F 201332%0%
Aug 1685°F67°F96°F 200759°F 201132%0%
Aug 1785°F67°F93°F 199561°F 200832%0%
Aug 1885°F67°F94°F 201963°F 200131%0%
Aug 1985°F67°F94°F 199961°F 202331%0%
Aug 2085°F67°F93°F 200755°F 200031%0%
Aug 2185°F67°F93°F 200256°F 202430%0%
Aug 2285°F66°F95°F 200755°F 199730%0%
Aug 2385°F66°F97°F 200753°F 199730%0%
Aug 2485°F66°F96°F 200756°F 199729%0%
Aug 2585°F66°F92°F 200757°F 201529%0%
Aug 2685°F66°F92°F 201155°F 202529%0%
Aug 2784°F66°F94°F 201652°F 202528%0%
Aug 2884°F66°F93°F 201655°F 202528%0%
Aug 2984°F65°F95°F 202456°F 202528%0%
Aug 3084°F65°F95°F 202455°F 201928%0%
Aug 3184°F65°F93°F 202459°F 202328%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Grainger County, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

August 1
sunrise 6:41 AM, sunset 8:39 PM
August 31
sunrise 7:05 AM, sunset 8:03 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00406272 (Morristown WFO), public domain. Records: NOAA GHCN-Daily, station USC00406272, 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.