Williston climate

Williston Weather in September

NOAA 1991-2020 normals for Blackville 3 W, 10.1 km from Williston

Average highs run from 87°F on September 1 to 81°F on September 30, and lows from 68°F to 60°F. Normal precipitation for the month is 4.81 in over about 9 wet days.

September day by day

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

Normal daily high and low temperature at Williston, in °F, with the record for each date.406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
84°F
Average low
64°F
Precipitation
4.81 in
Record high
99°FSep 5, 2026
Record low
46°FSep 30, 2006
Chance of a freeze
0%
Days of 90°F or more
7.6
Daylight
12 h 51 min to 11 h 52 min
Cloud cover
50%
Humidity
73%
Dew point
64°F
Wind
7.2 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
Sep 187°F68°F96°F 201459°F 202532%0%
Sep 287°F68°F97°F 202659°F 202531%0%
Sep 387°F68°F96°F 202656°F 202331%0%
Sep 487°F68°F96°F 202056°F 202131%0%
Sep 587°F67°F99°F 202656°F 201031%0%
Sep 686°F67°F96°F 202658°F 201031%0%
Sep 786°F67°F96°F 201956°F 201130%0%
Sep 886°F67°F97°F 201954°F 201130%0%
Sep 986°F67°F97°F 201956°F 201730%0%
Sep 1086°F66°F94°F 200255°F 201130%0%
Sep 1186°F66°F96°F 200257°F 202130%0%
Sep 1285°F66°F94°F 201957°F 201230%0%
Sep 1385°F65°F93°F 201956°F 201529%0%
Sep 1485°F65°F93°F 202652°F 201529%0%
Sep 1585°F65°F94°F 200552°F 201529%0%
Sep 1685°F65°F95°F 200557°F 201129%0%
Sep 1784°F64°F96°F 201956°F 201129%0%
Sep 1884°F64°F95°F 200557°F 200729%0%
Sep 1984°F64°F94°F 200555°F 201329%0%
Sep 2084°F63°F95°F 201054°F 200429%0%
Sep 2183°F63°F95°F 201053°F 202029%0%
Sep 2283°F63°F96°F 202250°F 202029%0%
Sep 2383°F62°F94°F 202451°F 202029%0%
Sep 2483°F62°F94°F 202547°F 202229%0%
Sep 2582°F62°F97°F 201951°F 202129%0%
Sep 2682°F61°F96°F 201950°F 201228%0%
Sep 2782°F61°F95°F 201954°F 202228%0%
Sep 2882°F60°F92°F 201954°F 201328%0%
Sep 2981°F60°F94°F 201947°F 200328%0%
Sep 3081°F60°F96°F 201946°F 200628%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Williston, 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).

September 1
sunrise 7:00 AM, sunset 7:51 PM
September 30
sunrise 7:19 AM, sunset 7:11 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00063826 (Blackville 3 W), public domain. Records: NOAA GHCN-Daily, station USW00063826, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.