Linn climate

Linn Weather in September

NOAA 1991-2020 normals for Freedom, 13.2 km from Linn

Average highs run from 85°F on September 1 to 75°F on September 30, and lows from 61°F to 50°F. Normal precipitation for the month is 4.03 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 Linn, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
80°F
Average low
56°F
Precipitation
4.03 in
Record high
100°FSep 5, 2026
Record low
36°FSep 29, 2003
Chance of a freeze
4%
Days of 90°F or more
3.3
Daylight
13 h 00 min to 11 h 50 min
Cloud cover
47%
Humidity
68%
Dew point
56°F
Wind
4.3 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 185°F61°F98°F 201149°F 200925%0%
Sep 284°F60°F97°F 200049°F 200925%0%
Sep 384°F60°F99°F 202649°F 200925%0%
Sep 484°F60°F98°F 202650°F 199725%0%
Sep 583°F59°F100°F 202646°F 199724%0%
Sep 683°F59°F94°F 201548°F 201124%0%
Sep 783°F59°F94°F 201246°F 202524%0%
Sep 883°F58°F98°F 202644°F 202424%0%
Sep 982°F58°F95°F 201343°F 202424%0%
Sep 1082°F58°F95°F 201346°F 202424%0%
Sep 1182°F57°F98°F 200048°F 201724%0%
Sep 1281°F57°F96°F 202548°F 200724%0%
Sep 1381°F57°F96°F 202540°F 201424%0%
Sep 1481°F56°F96°F 202540°F 199924%0%
Sep 1580°F56°F99°F 202643°F 201124%0%
Sep 1680°F55°F94°F 202642°F 199924%0%
Sep 1780°F55°F98°F 202642°F 199924%0%
Sep 1879°F55°F95°F 201845°F 201224%0%
Sep 1979°F54°F96°F 200043°F 201224%0%
Sep 2079°F54°F97°F 202241°F 200624%0%
Sep 2178°F53°F96°F 202242°F 199924%0%
Sep 2278°F53°F92°F 200039°F 199924%0%
Sep 2377°F53°F92°F 201739°F 201224%0%
Sep 2477°F52°F92°F 201740°F 201224%0%
Sep 2577°F52°F89°F 202338°F 200124%0%
Sep 2676°F52°F90°F 202137°F 200024%0%
Sep 2776°F51°F93°F 201941°F 200024%0%
Sep 2876°F51°F91°F 202142°F 200324%0%
Sep 2975°F50°F95°F 202336°F 200324%0%
Sep 3075°F50°F97°F 202336°F 199924%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Linn, 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 6:37 AM, sunset 7:37 PM
September 30
sunrise 7:02 AM, sunset 6:52 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00233043 (Freedom), public domain. Records: NOAA GHCN-Daily, station USW00003963, 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.