Fairmont weather in September: Fairmont, West Virginia: normal highs, lows, rain and records for September
Fairmont in September has a normal high of 77°F and a normal low of 56°F, a daily mean of 66°F, falling from 81°F on the 1st to 72°F by the 30th. Measurable precipitation falls on 10 days in a normal September, 3.85 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 25°C and low of 13°C, 98 mm of precipitation in September.
- NOAA stationFairmont
- Station IDUSC00462920
- Location39.46°N 80.14°W
- Elevation1,300 ft (396 m)
- Population18,063
- Jan 40° 24°
- Feb 43° 26°
- Mar 52° 33°
- Apr 65° 42°
- May 73° 52°
- Jun 80° 60°
- Jul 84° 64°
- Aug 83° 63°
- Sep 77° 56°
- Oct 65° 45°
- Nov 54° 36°
- Dec 44° 29°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Fairmont in September?
The normal high is 77°F and the normal low 56°F, for a daily mean of 66.4°F. September is 6.2°F cooler than August and 11.5°F warmer than October. September is the 4th warmest month of the year in Fairmont and the 6th wettest. Across the month the normal high falls 9°F, from 81°F on September 1 to 72°F on September 30. From one year to the next September's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 64°F and 69°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 34%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 81°F | 60°F | 31% | 22% |
| September 8 | 80°F | 59°F | 31% | 22% |
| September 15 | 78°F | 56°F | 32% | 22% |
| September 22 | 75°F | 54°F | 33% | 23% |
| September 30 | 72°F | 50°F | 34% | 24% |
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 | 81°F | 60°F | 31% | 22% | 13 h 10 min |
| September 2 | 81°F | 60°F | 31% | 22% | 13 h |
| September 3 | 81°F | 60°F | 31% | 22% | 13 h |
| September 4 | 81°F | 60°F | 31% | 22% | 13 h |
| September 5 | 81°F | 59°F | 31% | 22% | 13 h |
| September 6 | 80°F | 59°F | 31% | 22% | 12 h 50 min |
| September 7 | 80°F | 59°F | 31% | 22% | 12 h 50 min |
| September 8 | 80°F | 59°F | 31% | 22% | 12 h 50 min |
| September 9 | 80°F | 58°F | 31% | 22% | 12 h 50 min |
| September 10 | 79°F | 58°F | 31% | 22% | 12 h 40 min |
| September 11 | 79°F | 58°F | 31% | 22% | 12 h 40 min |
| September 12 | 79°F | 57°F | 31% | 22% | 12 h 40 min |
| September 13 | 78°F | 57°F | 31% | 22% | 12 h 40 min |
| September 14 | 78°F | 57°F | 31% | 22% | 12 h 30 min |
| September 15 | 78°F | 56°F | 32% | 22% | 12 h 30 min |
| September 16 | 77°F | 56°F | 32% | 23% | 12 h 30 min |
| September 17 | 77°F | 56°F | 32% | 23% | 12 h 30 min |
| September 18 | 77°F | 55°F | 32% | 23% | 12 h 20 min |
| September 19 | 76°F | 55°F | 32% | 23% | 12 h 20 min |
| September 20 | 76°F | 54°F | 32% | 23% | 12 h 20 min |
| September 21 | 75°F | 54°F | 33% | 23% | 12 h 20 min |
| September 22 | 75°F | 54°F | 33% | 23% | 12 h 10 min |
| September 23 | 75°F | 53°F | 33% | 24% | 12 h 10 min |
| September 24 | 74°F | 53°F | 33% | 24% | 12 h 10 min |
| September 25 | 74°F | 52°F | 33% | 24% | 12 h 10 min |
| September 26 | 73°F | 52°F | 34% | 24% | 12 h |
| September 27 | 73°F | 52°F | 34% | 24% | 12 h |
| September 28 | 73°F | 51°F | 34% | 24% | 12 h |
| September 29 | 72°F | 51°F | 34% | 24% | 11 h 50 min |
| September 30 | 72°F | 50°F | 34% | 24% | 11 h 50 min |
- Normal high
- 77°FSeptember average
- Normal low
- 56°FSeptember average
- Precipitation
- 3.85 inmonth total
- Days with precipitation
- 100.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 13 h 10 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 25
- Days at 80°F or more
- 12
- Sunshine
- 77%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00462920; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Fairmont in September?
On a given September day the chance of 0.01 inch or more is 32% on average, highest around September 30 (34%). In all, 3.85 in falls on 10 days of a normal September, 1 of them with an inch or more.
In a normal September in Fairmont, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00462920.
What are the records for September in Fairmont?
The warmest September temperature on this station's record (since 1905) is 101°F, on September 2, 1932; the coldest is 29°F, on September 24, 1983. The wettest September brought 9.90 in (2018).
The September mean against the 1991-2020 normal of 66.4°F: 2021 67.0°F (+0.6), 2022 65.1°F (−1.3), 2023 66.1°F (−0.3). 1 of 3 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 67.0°F | +0.6°F | 4.46 in |
| 2022 | 65.1°F | −1.3°F | 3.80 in |
| 2023 | 66.1°F | −0.3°F | 2.14 in |
Source: records: ACIS, station USC00462920; recent months: ACIS, station USC00462920. Records and recent months use complete months only.
How does September in Fairmont compare across West Virginia?
Across the 63 places PlainClimate covers in West Virginia, September normal highs run from 68°F in Davis to 82°F in Hamlin; Fairmont's is 77°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Fairmont in August83°F by day, 63°F at night
- Fairmont in October65°F by day, 45°F at night
- Fairmont through the yearEvery month, frost dates, records and recent years
- West Virginia in SeptemberThe statewide normal and the warmest and coolest places
- Hamlin: West Virginia's warmest Septembernormal high 82°F