Butler weather in September: Butler, Pennsylvania: normal highs, lows, rain and records for September
Butler in September has a normal high of 74°F and a normal low of 50°F, a daily mean of 62°F, falling from 79°F on the 1st to 69°F by the 30th. Measurable precipitation falls on 11 days in a normal September, 4.09 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 24°C and low of 10°C, 104 mm of precipitation in September.
- NOAA stationButler (2 mi SW)
- Station IDUSC00361139
- Location40.84°N 79.92°W
- Elevation1,000 ft (305 m)
- From the center2 miles
- Population13,010
- Jan 34° 17°
- Feb 37° 18°
- Mar 46° 25°
- Apr 60° 35°
- May 70° 45°
- Jun 78° 54°
- Jul 82° 58°
- Aug 81° 57°
- Sep 74° 50°
- Oct 62° 39°
- Nov 50° 30°
- Dec 39° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Butler in September?
The normal high is 74°F and the normal low 50°F, for a daily mean of 61.9°F. September is 6.9°F cooler than August and 11.5°F warmer than October. September is the 4th warmest month of the year in Butler and the 3rd wettest. Across the month the normal high falls 10°F, from 79°F on September 1 to 69°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 60°F and 64°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 39%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 79°F | 54°F | 35% | 22% |
| September 8 | 77°F | 52°F | 35% | 22% |
| September 15 | 75°F | 50°F | 35% | 22% |
| September 22 | 72°F | 48°F | 37% | 22% |
| September 30 | 69°F | 45°F | 39% | 23% |
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 | 79°F | 54°F | 35% | 22% | 13 h 10 min |
| September 2 | 79°F | 54°F | 35% | 22% | 13 h 10 min |
| September 3 | 78°F | 54°F | 35% | 22% | 13 h |
| September 4 | 78°F | 53°F | 35% | 22% | 13 h |
| September 5 | 78°F | 53°F | 35% | 22% | 13 h |
| September 6 | 78°F | 53°F | 35% | 22% | 13 h |
| September 7 | 77°F | 53°F | 35% | 22% | 12 h 50 min |
| September 8 | 77°F | 52°F | 35% | 22% | 12 h 50 min |
| September 9 | 77°F | 52°F | 35% | 23% | 12 h 50 min |
| September 10 | 77°F | 52°F | 35% | 23% | 12 h 50 min |
| September 11 | 76°F | 51°F | 35% | 23% | 12 h 40 min |
| September 12 | 76°F | 51°F | 35% | 23% | 12 h 40 min |
| September 13 | 76°F | 51°F | 35% | 22% | 12 h 40 min |
| September 14 | 75°F | 50°F | 35% | 22% | 12 h 30 min |
| September 15 | 75°F | 50°F | 35% | 22% | 12 h 30 min |
| September 16 | 74°F | 50°F | 35% | 22% | 12 h 30 min |
| September 17 | 74°F | 49°F | 35% | 22% | 12 h 30 min |
| September 18 | 74°F | 49°F | 36% | 22% | 12 h 20 min |
| September 19 | 73°F | 49°F | 36% | 22% | 12 h 20 min |
| September 20 | 73°F | 48°F | 36% | 22% | 12 h 20 min |
| September 21 | 73°F | 48°F | 36% | 22% | 12 h 20 min |
| September 22 | 72°F | 48°F | 37% | 22% | 12 h 10 min |
| September 23 | 72°F | 47°F | 37% | 22% | 12 h 10 min |
| September 24 | 71°F | 47°F | 37% | 23% | 12 h 10 min |
| September 25 | 71°F | 46°F | 37% | 23% | 12 h 10 min |
| September 26 | 70°F | 46°F | 38% | 23% | 12 h |
| September 27 | 70°F | 46°F | 38% | 23% | 12 h |
| September 28 | 70°F | 45°F | 38% | 23% | 12 h |
| September 29 | 69°F | 45°F | 39% | 23% | 11 h 50 min |
| September 30 | 69°F | 45°F | 39% | 23% | 11 h 50 min |
- Normal high
- 74°FSeptember average
- Normal low
- 50°FSeptember average
- Precipitation
- 4.09 inmonth total
- Days with precipitation
- 110.01 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
- 22
- Days at 80°F or more
- 9
- Sunshine
- 75%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00361139; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Butler in September?
On a given September day the chance of 0.01 inch or more is 36% on average, highest around September 30 (39%). In all, 4.09 in falls on 11 days of a normal September, 1 of them with an inch or more.
In a normal September in Butler, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00361139.
What are the records for September in Butler?
The warmest September temperature on this station's record (since 1967) is 94°F, on September 4, 1973; the coldest is 28°F, on September 25, 1974. The wettest September brought 9.83 in (2018).
Source: records: ACIS, station USC00361139. Records and recent months use complete months only.
How does September in Butler compare across Pennsylvania?
Across the 108 places PlainClimate covers in Pennsylvania, September normal highs run from 68°F in Laporte to 80°F in Marcus Hook; Butler's is 74°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.