Humboldt climate

Humboldt Weather in September

NOAA 1991-2020 normals for Humboldt Wtp, 0.5 km from Humboldt

Average highs run from 77°F on September 1 to 68°F on September 30, and lows from 57°F to 45°F. Normal precipitation for the month is 3.33 in.

September day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Humboldt, in °F, with the record for each date.020406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
73°F
Average low
51°F
Precipitation
3.33 in
Record high
103°FSep 6, 1939
Record low
20°FSep 28, 1942
Chance of a freeze
23%
Daylight
13 h 09 min to 11 h 47 min
Cloud cover
49%
Humidity
69%
Dew point
52°F
Wind
10.3 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 177°F57°F99°F 191137°F 19490%
Sep 276°F56°F98°F 191339°F 19010%
Sep 376°F56°F99°F 192532°F 19740%
Sep 476°F56°F100°F 192534°F 19740%
Sep 576°F55°F100°F 191336°F 19620%
Sep 676°F55°F103°F 193939°F 19560%
Sep 775°F55°F102°F 193936°F 19860%
Sep 875°F54°F99°F 194738°F 19860%
Sep 975°F54°F98°F 195535°F 19240%
Sep 1074°F54°F98°F 193136°F 19100%
Sep 1174°F53°F97°F 192736°F 19550%
Sep 1274°F53°F100°F 193929°F 19020%
Sep 1374°F52°F100°F 193927°F 19020%
Sep 1473°F52°F100°F 193932°F 19230%
Sep 1573°F52°F100°F 193932°F 20110%
Sep 1673°F51°F96°F 193131°F 19370%
Sep 1772°F51°F96°F 192530°F 19000%
Sep 1872°F50°F95°F 194727°F 19290%
Sep 1972°F50°F97°F 194831°F 19910%
Sep 2071°F50°F92°F 194030°F 19910%
Sep 2171°F49°F97°F 193730°F 19990%
Sep 2271°F49°F97°F 193726°F 19130%
Sep 2370°F48°F90°F 193827°F 19130%
Sep 2470°F48°F89°F 193528°F 19420%
Sep 2569°F47°F91°F 192027°F 19260%
Sep 2669°F47°F92°F 195626°F 19260%
Sep 2769°F47°F92°F 195626°F 19280%
Sep 2868°F46°F91°F 193920°F 19420%
Sep 2968°F46°F88°F 198126°F 19490%
Sep 3068°F45°F91°F 195225°F 19390%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Humboldt, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:42 AM, sunset 7:51 PM
September 30
sunrise 7:13 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 USC00133980 (Humboldt Wtp), public domain. Records: NOAA GHCN-Daily, station USC00132999, 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.