Blair climate

Blair Weather in September

NOAA 1991-2020 normals for Ft Calhoun 4W, 11.3 km from Blair

Average highs run from 80°F on September 1 to 70°F on September 30, and lows from 59°F to 49°F. Normal precipitation for the month is 3.31 in.

September day by day

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

Normal daily high and low temperature at Blair, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
75°F
Average low
54°F
Precipitation
3.31 in
Record high
99°FSep 21, 2022
Record low
36°FSep 23, 2012
Chance of a freeze
10%
Days of 90°F or more
1.6
Daylight
13 h 06 min to 11 h 48 min
Cloud cover
46%
Humidity
66%
Dew point
52°F
Wind
10.5 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 180°F59°F93°F 201349°F 20090%
Sep 279°F59°F92°F 201151°F 20090%
Sep 379°F59°F95°F 202348°F 20060%
Sep 479°F59°F96°F 202347°F 20080%
Sep 579°F58°F97°F 201245°F 20110%
Sep 679°F58°F90°F 201548°F 20170%
Sep 778°F57°F93°F 200247°F 20080%
Sep 878°F57°F91°F 200246°F 20200%
Sep 978°F57°F91°F 200540°F 20200%
Sep 1078°F56°F97°F 201341°F 20200%
Sep 1177°F56°F94°F 201342°F 20200%
Sep 1277°F56°F94°F 201246°F 20070%
Sep 1377°F55°F90°F 201146°F 20070%
Sep 1476°F55°F93°F 200443°F 20070%
Sep 1576°F55°F91°F 201740°F 20070%
Sep 1676°F54°F88°F 201740°F 20070%
Sep 1775°F54°F88°F 202144°F 20110%
Sep 1875°F53°F89°F 201843°F 20120%
Sep 1975°F53°F87°F 200439°F 20030%
Sep 2074°F53°F89°F 200438°F 20060%
Sep 2174°F52°F99°F 202238°F 20060%
Sep 2273°F52°F96°F 200539°F 20120%
Sep 2373°F51°F92°F 201736°F 20120%
Sep 2473°F51°F88°F 201737°F 20120%
Sep 2572°F51°F87°F 201743°F 20110%
Sep 2672°F50°F87°F 202043°F 20030%
Sep 2771°F50°F87°F 202043°F 20100%
Sep 2871°F49°F88°F 202140°F 20030%
Sep 2970°F49°F88°F 202137°F 20030%
Sep 3070°F49°F94°F 202337°F 20050%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Blair, 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 (CDT).

September 1
sunrise 6:51 AM, sunset 7:57 PM
September 30
sunrise 7:20 AM, sunset 7:08 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00252980 (Ft Calhoun 4W), public domain. Records: NOAA GHCN-Daily, station USC00252980, 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.