Columbia weather in September: Columbia, Missouri: normal highs, lows, rain and records for September
Columbia in September has a normal high of 80°F and a normal low of 58°F, a daily mean of 69°F, falling from 85°F on the 1st to 75°F by the 30th. Measurable precipitation falls on 7 days in a normal September, 3.83 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 27°C and low of 15°C, 97 mm of precipitation in September.
- NOAA stationColumbia Regional Airport
- Station IDUSW00003945
- Location38.82°N 92.22°W
- Elevation893 ft (272 m)
- From the center11 miles
- Population130,900
- Jan 40° 23°
- Feb 45° 26°
- Mar 56° 36°
- Apr 67° 46°
- May 76° 56°
- Jun 85° 65°
- Jul 89° 69°
- Aug 88° 67°
- Sep 80° 58°
- Oct 68° 47°
- Nov 55° 36°
- Dec 44° 27°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Columbia in September?
The normal high is 80°F and the normal low 58°F, for a daily mean of 69.2°F. September is 8.0°F cooler than August and 11.7°F warmer than October. September is the 4th warmest month of the year in Columbia and the 6th wettest. Across the month the normal high falls 10°F, from 85°F on September 1 to 75°F on September 30. From one year to the next September's mean temperature typically moves about 2.9°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 66°F and 72°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 26%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 85°F | 64°F | 25% | 17% |
| September 8 | 83°F | 61°F | 25% | 18% |
| September 15 | 80°F | 59°F | 25% | 18% |
| September 22 | 78°F | 56°F | 25% | 18% |
| September 30 | 75°F | 53°F | 26% | 18% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 85°F | 64°F | 25% | 17% | 13 h |
| September 2 | 85°F | 63°F | 25% | 17% | 13 h |
| September 3 | 84°F | 63°F | 25% | 17% | 13 h |
| September 4 | 84°F | 63°F | 25% | 17% | 13 h |
| September 5 | 84°F | 62°F | 25% | 17% | 12 h 50 min |
| September 6 | 83°F | 62°F | 25% | 17% | 12 h 50 min |
| September 7 | 83°F | 62°F | 25% | 18% | 12 h 50 min |
| September 8 | 83°F | 61°F | 25% | 18% | 12 h 50 min |
| September 9 | 83°F | 61°F | 25% | 18% | 12 h 40 min |
| September 10 | 82°F | 61°F | 25% | 18% | 12 h 40 min |
| September 11 | 82°F | 60°F | 25% | 18% | 12 h 40 min |
| September 12 | 82°F | 60°F | 25% | 18% | 12 h 40 min |
| September 13 | 81°F | 59°F | 25% | 18% | 12 h 40 min |
| September 14 | 81°F | 59°F | 25% | 18% | 12 h 30 min |
| September 15 | 80°F | 59°F | 25% | 18% | 12 h 30 min |
| September 16 | 80°F | 58°F | 25% | 18% | 12 h 30 min |
| September 17 | 80°F | 58°F | 25% | 18% | 12 h 30 min |
| September 18 | 79°F | 57°F | 25% | 18% | 12 h 20 min |
| September 19 | 79°F | 57°F | 25% | 18% | 12 h 20 min |
| September 20 | 79°F | 57°F | 25% | 18% | 12 h 20 min |
| September 21 | 78°F | 56°F | 25% | 18% | 12 h 20 min |
| September 22 | 78°F | 56°F | 25% | 18% | 12 h 10 min |
| September 23 | 78°F | 55°F | 25% | 18% | 12 h 10 min |
| September 24 | 77°F | 55°F | 26% | 18% | 12 h 10 min |
| September 25 | 77°F | 55°F | 26% | 18% | 12 h 10 min |
| September 26 | 76°F | 54°F | 26% | 18% | 12 h |
| September 27 | 76°F | 54°F | 26% | 18% | 12 h |
| September 28 | 76°F | 53°F | 26% | 18% | 12 h |
| September 29 | 75°F | 53°F | 26% | 18% | 12 h |
| September 30 | 75°F | 53°F | 26% | 18% | 11 h 50 min |
- Normal high
- 80°FSeptember average
- Normal low
- 58°FSeptember average
- Precipitation
- 3.83 inmonth total
- Days with precipitation
- 70.01 inch or more
- Days at 90°F or more
- 3
- Daylight
- 13 h to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 26
- Days at 80°F or more
- 15
- Sunshine
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00003945; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Columbia in September?
On a given September day the chance of 0.01 inch or more is 25% on average, highest around September 30 (26%). In all, 3.83 in falls on 7 days of a normal September, 1 of them with an inch or more.
In a normal September in Columbia, 3 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00003945.
How humid and windy is Columbia in September?
At 3 p.m. the normal temperature is 73°F with 48% relative humidity and a dew point of 52°F; at 6 a.m. it is 54°F with 87% humidity. The wind averages 8.3 mph, most often from the southwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 54°F | 50°F | 87% | 7.1 mph | 70% |
| 9 a.m. | 63°F | 53°F | 71% | 9.3 mph | 65% |
| noon | 71°F | 53°F | 53% | 10.6 mph | 65% |
| 3 p.m. | 73°F | 52°F | 48% | 10.7 mph | 63% |
| 6 p.m. | 66°F | 52°F | 62% | 6.9 mph | 74% |
| 9 p.m. | 61°F | 52°F | 73% | 7.4 mph | 74% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00003945. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for September in Columbia?
The warmest September temperature on Columbia's official record (since 1889) is 104°F, on September 14, 1893; the coldest is 26°F, on September 30, 1895. The wettest September brought 13.34 in (1945).
The September mean against the 1991-2020 normal of 69.2°F: 2021 73.8°F (+4.6), 2022 71.1°F (+1.9), 2023 71.1°F (+1.9), 2024 70.4°F (+1.2), 2025 71.7°F (+2.5), 2026 77.0°F (+7.8). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 73.8°F | +4.6°F | 3.68 in |
| 2022 | 71.1°F | +1.9°F | 1.82 in |
| 2023 | 71.1°F | +1.9°F | 0.53 in |
| 2024 | 70.4°F | +1.2°F | 3.52 in |
| 2025 | 71.7°F | +2.5°F | 2.06 in |
| 2026 | 77.0°F | +7.8°F | 1.57 in |
Source: records: ACIS, NWS threaded record COUthr; recent months: ACIS, station USW00003945. Records and recent months use complete months only.
How does September in Columbia compare across Missouri?
Across the 134 places PlainClimate covers in Missouri, September normal highs run from 76°F in Unionville to 85°F in Kennett; Columbia's is 80°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.