Madison County climate

Madison County Weather in September

NOAA 1991-2020 normals for Rexburg Byu Idaho, 10.8 km from Madison County

Average highs run from 80°F on September 1 to 67°F on September 30, and lows from 47°F to 38°F. Normal precipitation for the month is 1.04 in over about 6 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 Madison County, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
74°F
Average low
43°F
Precipitation
1.04 in
Record high
98°FSep 7, 2022
Record low
21°FSep 28, 1999
Chance of a freeze
68%
Days of 90°F or more
0.9
Daylight
13 h 12 min to 11 h 46 min
Cloud cover
46%
Humidity
51%
Dew point
33°F
Wind
6.3 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°F47°F94°F 202233°F 200619%0%
Sep 280°F46°F92°F 202236°F 200619%0%
Sep 379°F46°F97°F 202236°F 201019%0%
Sep 479°F46°F95°F 202233°F 200420%0%
Sep 579°F46°F95°F 202235°F 200820%0%
Sep 678°F45°F97°F 202232°F 201620%0%
Sep 778°F45°F98°F 202232°F 201020%0%
Sep 877°F45°F90°F 202130°F 200120%0%
Sep 977°F45°F91°F 202130°F 200120%
Sep 1077°F44°F89°F 202132°F 201620%
Sep 1176°F44°F85°F 200135°F 200721%
Sep 1276°F44°F88°F 201734°F 201221%
Sep 1375°F43°F85°F 200630°F 200321%
Sep 1475°F43°F88°F 200030°F 200321%
Sep 1575°F43°F91°F 200033°F 200321%
Sep 1674°F43°F89°F 200036°F 200621%
Sep 1774°F42°F86°F 199830°F 200621%
Sep 1873°F42°F83°F 200925°F 200321%
Sep 1973°F42°F85°F 200928°F 200321%
Sep 2072°F41°F84°F 202232°F 200321%
Sep 2172°F41°F82°F 200130°F 200422%
Sep 2271°F41°F83°F 201529°F 200222%
Sep 2371°F40°F84°F 200127°F 200022%
Sep 2470°F40°F87°F 200122°F 200022%
Sep 2570°F40°F89°F 200124°F 200022%
Sep 2669°F40°F85°F 201028°F 200022%
Sep 2769°F39°F85°F 200126°F 199922%
Sep 2868°F39°F85°F 202421°F 199922%
Sep 2968°F39°F83°F 202423°F 199922%
Sep 3067°F38°F84°F 201127°F 202123%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Madison County, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

September 1
sunrise 6:50 AM, sunset 8:02 PM
September 30
sunrise 7:23 AM, sunset 7:09 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00107644 (Rexburg Byu Idaho), public domain. Records: NOAA GHCN-Daily, station USW00094194, 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.