Addison climate

Addison Weather in September

NOAA 1991-2020 normals for Hartford Wwtp, 10.6 km from Addison

Average highs run from 76°F on September 1 to 66°F on September 30, and lows from 53°F to 43°F. Normal precipitation for the month is 3.23 in over about 9 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 Addison, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
72°F
Average low
48°F
Precipitation
3.23 in
Record high
93°FSep 4, 2023
Record low
32°FSep 30, 2009
Chance of a freeze
37%
Daylight
13 h 11 min to 11 h 46 min
Cloud cover
53%
Humidity
75%
Dew point
53°F
Wind
9.6 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 176°F53°F87°F 201243°F 200929%0%
Sep 276°F53°F89°F 202643°F 200929%0%
Sep 376°F53°F87°F 201145°F 200929%0%
Sep 476°F53°F93°F 202341°F 202529%0%
Sep 575°F52°F91°F 202345°F 201129%0%
Sep 675°F52°F89°F 202343°F 201129%0%
Sep 775°F52°F91°F 201641°F 202429%0%
Sep 875°F51°F83°F 201343°F 202429%0%
Sep 974°F51°F83°F 202244°F 201730%0%
Sep 1074°F51°F84°F 201344°F 201730%0%
Sep 1174°F50°F92°F 201343°F 201730%0%
Sep 1273°F50°F84°F 201240°F 201430%0%
Sep 1373°F50°F86°F 201238°F 201430%0%
Sep 1473°F49°F83°F 200942°F 201330%0%
Sep 1572°F49°F84°F 200935°F 201130%0%
Sep 1672°F48°F86°F 202435°F 201130%0%
Sep 1772°F48°F86°F 201739°F 201330%0%
Sep 1871°F48°F87°F 201842°F 201230%0%
Sep 1971°F47°F85°F 202534°F 201230%0%
Sep 2070°F47°F86°F 202438°F 202031%0%
Sep 2170°F46°F84°F 201741°F 202031%0%
Sep 2270°F46°F86°F 202438°F 201231%0%
Sep 2369°F46°F92°F 201735°F 201231%0%
Sep 2469°F45°F92°F 201736°F 201231%0%
Sep 2568°F45°F89°F 201742°F 201131%0%
Sep 2668°F45°F89°F 201742°F 201231%0%
Sep 2768°F44°F84°F 201737°F 201231%0%
Sep 2867°F44°F82°F 202536°F 202231%0%
Sep 2967°F43°F79°F 201334°F 201831%0%
Sep 3066°F43°F84°F 202532°F 200932%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Addison, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:18 AM, sunset 7:29 PM
September 30
sunrise 6:50 AM, sunset 6:36 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00473453 (Hartford Wwtp), public domain. Records: NOAA GHCN-Daily, station USC00479052, 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.