Aurora climate

Aurora Weather in September

NOAA 1991-2020 normals for Billings 1SW, 15.6 km from Aurora

Average highs run from 87°F on September 1 to 77°F on September 30, and lows from 62°F to 52°F. Normal precipitation for the month is 4.80 in over about 7 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 Aurora, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
82°F
Average low
57°F
Precipitation
4.80 in
Record high
105°FSep 3, 2000
Record low
32°FSep 30, 1984
Chance of a freeze
1%
Days of 90°F or more
3.8
Daylight
12 h 57 min to 11 h 51 min
Cloud cover
45%
Humidity
69%
Dew point
58°F
Wind
7.8 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 187°F62°F103°F 200051°F 200924%0%
Sep 286°F62°F103°F 200048°F 197424%0%
Sep 386°F61°F105°F 200042°F 197424%0%
Sep 486°F61°F101°F 200040°F 197424%0%
Sep 586°F61°F103°F 199845°F 197424%0%
Sep 685°F61°F103°F 199844°F 201724%0%
Sep 785°F60°F100°F 199045°F 201124%0%
Sep 885°F60°F99°F 199845°F 198624%0%
Sep 984°F60°F99°F 202648°F 202424%0%
Sep 1084°F59°F99°F 202644°F 197624%0%
Sep 1184°F59°F95°F 200044°F 197624%0%
Sep 1283°F59°F97°F 200046°F 201524%0%
Sep 1383°F58°F93°F 199645°F 201424%0%
Sep 1483°F58°F98°F 201143°F 197924%0%
Sep 1582°F58°F96°F 198040°F 199324%0%
Sep 1682°F57°F98°F 202642°F 197924%0%
Sep 1782°F57°F98°F 202640°F 198124%0%
Sep 1881°F56°F97°F 202635°F 198124%0%
Sep 1981°F56°F93°F 198038°F 199124%0%
Sep 2081°F56°F94°F 202240°F 198324%0%
Sep 2180°F55°F94°F 198033°F 198324%0%
Sep 2280°F55°F95°F 202437°F 198224%0%
Sep 2380°F54°F93°F 200538°F 198324%0%
Sep 2479°F54°F93°F 200538°F 199024%0%
Sep 2579°F54°F89°F 201638°F 200124%0%
Sep 2678°F53°F88°F 201737°F 198424%0%
Sep 2778°F53°F87°F 199039°F 198524%0%
Sep 2878°F52°F88°F 199842°F 200324%0%
Sep 2977°F52°F89°F 197936°F 198424%0%
Sep 3077°F52°F89°F 197932°F 198424%0%

Chance of rain

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

September 1
sunrise 6:46 AM, sunset 7:43 PM
September 30
sunrise 7:09 AM, sunset 7:00 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00230657 (Billings 1SW), public domain. Records: NOAA GHCN-Daily, station USC00235704, 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.