Sullivan County climate

Sullivan County Weather in August

NOAA 1991-2020 normals for Bristol Tri City AP, 10 km from Sullivan County

Average highs run from 86°F on August 1 to 85°F on August 31, and lows from 65°F to 61°F. Normal precipitation for the month is 3.76 in over about 11 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 Sullivan County, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
86°F
Average low
63°F
Precipitation
3.76 in
Record high
101°FAug 18, 1988
Record low
43°FAug 29, 1986
Chance of a freeze
0%
Days of 90°F or more
6.9
Daylight
13 h 59 min to 12 h 59 min
Cloud cover
58%
Humidity
70%
Dew point
62°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 186°F65°F95°F 195351°F 199740%0%
Aug 286°F65°F96°F 200655°F 199740%0%
Aug 386°F65°F97°F 194452°F 199840%0%
Aug 486°F64°F96°F 201052°F 195039%0%
Aug 586°F64°F96°F 201151°F 195039%0%
Aug 686°F64°F94°F 195551°F 195039%0%
Aug 786°F64°F94°F 194447°F 200439%0%
Aug 886°F64°F96°F 198048°F 198939%0%
Aug 986°F64°F97°F 198047°F 198938%0%
Aug 1086°F64°F98°F 198052°F 197638%0%
Aug 1186°F64°F95°F 198051°F 196238%0%
Aug 1286°F64°F96°F 194451°F 200837%0%
Aug 1386°F64°F96°F 201051°F 194637%0%
Aug 1486°F64°F97°F 198851°F 196737%0%
Aug 1586°F64°F98°F 199550°F 196436%0%
Aug 1686°F63°F98°F 195447°F 197936%0%
Aug 1786°F63°F100°F 198849°F 197935%0%
Aug 1886°F63°F101°F 198853°F 194335%0%
Aug 1986°F63°F96°F 200752°F 194335%0%
Aug 2086°F63°F94°F 198351°F 194334%0%
Aug 2186°F63°F98°F 198349°F 202434%0%
Aug 2286°F63°F96°F 198347°F 195633%0%
Aug 2386°F63°F99°F 200749°F 199733%0%
Aug 2486°F62°F97°F 200748°F 199732%0%
Aug 2585°F62°F96°F 194350°F 194232%0%
Aug 2685°F62°F95°F 195450°F 194232%0%
Aug 2785°F62°F95°F 194346°F 194531%0%
Aug 2885°F62°F94°F 194848°F 196831%0%
Aug 2985°F62°F96°F 195343°F 198631%0%
Aug 3085°F61°F95°F 195346°F 198630%0%
Aug 3185°F61°F98°F 195347°F 194630%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Sullivan 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 6:36 AM, sunset 8:35 PM
August 31
sunrise 7:00 AM, sunset 7:59 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00013877 (Bristol Tri City AP), public domain. Records: NOAA GHCN-Daily, station USW00013877, 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.