Byron climate

Byron Weather in September

NOAA 1991-2020 normals for Lovell, 9.3 km from Byron

Average highs run from 80°F on September 1 to 67°F on September 30, and lows from 48°F to 38°F. Normal precipitation for the month is 0.79 in over about 4 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 Byron, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
74°F
Average low
43°F
Precipitation
0.79 in
Snowfall
0.1 in
Record high
99°FSep 2, 1983
Record low
14°FSep 25, 1926
Chance of a freeze
56%
Days of 90°F or more
1.7
Daylight
13 h 14 min to 11 h 45 min
Cloud cover
51%
Humidity
48%
Dew point
36°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 180°F48°F98°F 195433°F 191412%0%
Sep 280°F47°F99°F 198332°F 195912%0%
Sep 380°F47°F96°F 197633°F 190012%0%
Sep 479°F47°F98°F 197829°F 196212%0%
Sep 579°F47°F99°F 197831°F 191813%0%
Sep 679°F46°F98°F 197826°F 189813%0%
Sep 778°F46°F95°F 198028°F 189813%0%
Sep 878°F46°F99°F 202227°F 192913%0%
Sep 977°F45°F98°F 197927°F 189913%0%
Sep 1077°F45°F92°F 198123°F 189813%0%
Sep 1177°F45°F90°F 195822°F 189814%0%
Sep 1276°F44°F94°F 197125°F 189814%0%
Sep 1376°F44°F97°F 198127°F 197014%0%
Sep 1475°F44°F93°F 195927°F 195214%0%
Sep 1575°F43°F94°F 195927°F 197014%0%
Sep 1674°F43°F90°F 194827°F 193614%0%
Sep 1774°F43°F91°F 197927°F 196514%0%
Sep 1873°F42°F90°F 191423°F 197114%0%
Sep 1973°F42°F90°F 192024°F 196514%0%
Sep 2072°F42°F91°F 198120°F 198314%0%
Sep 2172°F41°F92°F 196620°F 198315%0%
Sep 2271°F41°F90°F 196623°F 197115%0%
Sep 2371°F41°F90°F 196625°F 197114%0%
Sep 2470°F40°F90°F 196618°F 192614%0%
Sep 2570°F40°F88°F 194314°F 192614%0%
Sep 2669°F40°F92°F 201517°F 192614%0%
Sep 2769°F39°F90°F 202417°F 190014%0%
Sep 2868°F39°F92°F 201518°F 198414%0%
Sep 2968°F38°F87°F 193823°F 191214%0%
Sep 3067°F38°F94°F 202417°F 198514%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Byron, in percent, and of at least 0.1 inch of snowfall.0510151102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

September 1
sunrise 6:37 AM, sunset 7:51 PM
September 30
sunrise 7:11 AM, sunset 6:56 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00485770 (Lovell), public domain. Records: NOAA GHCN-Daily, station USC00485770, 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.