Opal climate

Opal Weather in September

NOAA 1991-2020 normals for Warrenton 3 Se, 7.2 km from Opal

Average highs run from 82°F on September 1 to 72°F on September 30, and lows from 62°F to 52°F.

September day by day

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

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

September at a glance

Average high
78°F
Average low
58°F
Record high
99°FSep 2, 2026
Record low
42°FSep 23, 1999
Chance of a freeze
0%
Days of 90°F or more
2.6
Daylight
13 h 01 min to 11 h 49 min
Cloud cover
54%
Humidity
71%
Dew point
56°F
Wind
3.8 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
Sep 182°F62°F94°F 199553°F 20250%
Sep 282°F62°F99°F 202653°F 20250%
Sep 382°F62°F96°F 202654°F 19950%
Sep 481°F61°F94°F 201453°F 19970%
Sep 581°F61°F97°F 202348°F 19970%
Sep 681°F61°F97°F 202349°F 19970%
Sep 781°F61°F98°F 199852°F 20000%
Sep 880°F60°F97°F 199849°F 20240%
Sep 980°F60°F94°F 201049°F 20240%
Sep 1080°F60°F96°F 201549°F 20240%
Sep 1180°F59°F96°F 202651°F 20120%
Sep 1279°F59°F94°F 201951°F 20120%
Sep 1379°F59°F96°F 201951°F 20120%
Sep 1479°F58°F94°F 199850°F 20140%
Sep 1578°F58°F96°F 199847°F 20010%
Sep 1678°F58°F97°F 199844°F 20010%
Sep 1777°F57°F95°F 199845°F 20000%
Sep 1877°F57°F95°F 199844°F 20130%
Sep 1977°F57°F88°F 201644°F 20130%
Sep 2076°F56°F90°F 202548°F 19990%
Sep 2176°F56°F91°F 200546°F 20060%
Sep 2276°F55°F91°F 199845°F 19970%
Sep 2375°F55°F92°F 201942°F 19990%
Sep 2475°F55°F96°F 201042°F 19990%
Sep 2574°F54°F97°F 201042°F 19990%
Sep 2674°F54°F93°F 201042°F 20010%
Sep 2774°F53°F92°F 200742°F 20010%
Sep 2873°F53°F96°F 199844°F 20000%
Sep 2973°F53°F91°F 201944°F 20220%
Sep 3072°F52°F81°F 199844°F 20030%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Opal, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

September 1
sunrise 6:40 AM, sunset 7:41 PM
September 30
sunrise 7:06 AM, sunset 6:55 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00448888 (Warrenton 3 Se), public domain. Records: NOAA GHCN-Daily, station USC00443204, 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.