Olathe climate

Olathe Weather in September

NOAA 1991-2020 normals for Olathe 3E, 5.1 km from Olathe

Average highs run from 84°F on September 1 to 74°F on September 30, and lows from 64°F to 53°F. Normal precipitation for the month is 4.25 in over about 8 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 Olathe, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
79°F
Average low
58°F
Precipitation
4.25 in
Record high
105°FSep 2, 2000
Record low
38°FSep 13, 2014
Chance of a freeze
2%
Days of 90°F or more
2.7
Daylight
13 h 01 min to 11 h 49 min
Cloud cover
45%
Humidity
69%
Dew point
56°F
Wind
9.4 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 184°F64°F104°F 200051°F 200925%0%
Sep 284°F63°F105°F 200050°F 200525%0%
Sep 383°F63°F100°F 200055°F 201025%0%
Sep 483°F63°F97°F 202351°F 199725%0%
Sep 583°F62°F100°F 202649°F 200825%0%
Sep 682°F62°F100°F 202648°F 202525%0%
Sep 782°F62°F94°F 200250°F 201125%0%
Sep 882°F61°F99°F 202651°F 202026%0%
Sep 981°F61°F95°F 201350°F 200826%0%
Sep 1081°F61°F95°F 200050°F 202426%0%
Sep 1181°F60°F100°F 200050°F 200726%0%
Sep 1280°F60°F94°F 202544°F 201426%0%
Sep 1380°F60°F92°F 202538°F 201426%0%
Sep 1480°F59°F94°F 202649°F 199626%0%
Sep 1579°F59°F93°F 202645°F 200726%0%
Sep 1679°F58°F92°F 202647°F 201427%0%
Sep 1779°F58°F94°F 202652°F 199627%0%
Sep 1878°F58°F96°F 202247°F 201227%0%
Sep 1978°F57°F97°F 202243°F 200327%0%
Sep 2078°F57°F97°F 202245°F 200327%0%
Sep 2177°F56°F89°F 200742°F 199927%0%
Sep 2277°F56°F90°F 200045°F 199927%0%
Sep 2377°F56°F87°F 200740°F 201227%0%
Sep 2476°F55°F87°F 200742°F 200026%0%
Sep 2576°F55°F88°F 199842°F 200026%0%
Sep 2675°F54°F91°F 202143°F 200026%0%
Sep 2775°F54°F90°F 202140°F 201826%0%
Sep 2875°F54°F88°F 200241°F 199626%0%
Sep 2974°F53°F90°F 202341°F 200326%0%
Sep 3074°F53°F89°F 202343°F 200326%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Olathe, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:48 AM, sunset 7:49 PM
September 30
sunrise 7:14 AM, sunset 7:03 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00145972 (Olathe 3E), public domain. Records: NOAA GHCN-Daily, station USW00003967, 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.