Winchester weather in September: Winchester, Virginia: normal highs, lows, rain and records for September
Winchester in September has a normal high of 77°F and a normal low of 57°F, a daily mean of 67°F, falling from 82°F on the 1st to 72°F by the 30th. Measurable precipitation falls on 10 days in a normal September, 4.18 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 25°C and low of 14°C, 106 mm of precipitation in September.
- NOAA stationWinchester
- Station IDUSC00449181
- Location39.19°N 78.15°W
- Elevation720 ft (220 m)
- From the center2 miles
- Population27,800
- Jan 41° 24°
- Feb 45° 26°
- Mar 53° 32°
- Apr 65° 42°
- May 73° 52°
- Jun 82° 61°
- Jul 86° 66°
- Aug 84° 64°
- Sep 77° 57°
- Oct 66° 45°
- Nov 55° 35°
- Dec 45° 28°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Winchester in September?
The normal high is 77°F and the normal low 57°F, for a daily mean of 66.8°F. September is 7.2°F cooler than August and 11.7°F warmer than October. September is the 4th warmest month of the year in Winchester and the 2nd wettest. Across the month the normal high falls 10°F, from 82°F on September 1 to 72°F on September 30. From one year to the next September's mean temperature typically moves about 2.2°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 65°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 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 82°F | 61°F | 31% | 18% |
| September 8 | 80°F | 59°F | 32% | 19% |
| September 15 | 78°F | 57°F | 32% | 19% |
| September 22 | 75°F | 54°F | 33% | 20% |
| September 30 | 72°F | 51°F | 33% | 20% |
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 | 82°F | 61°F | 31% | 18% | 13 h 10 min |
| September 2 | 82°F | 61°F | 31% | 18% | 13 h |
| September 3 | 82°F | 61°F | 31% | 18% | 13 h |
| September 4 | 81°F | 61°F | 31% | 18% | 13 h |
| September 5 | 81°F | 60°F | 31% | 18% | 13 h |
| September 6 | 81°F | 60°F | 31% | 18% | 12 h 50 min |
| September 7 | 81°F | 60°F | 32% | 18% | 12 h 50 min |
| September 8 | 80°F | 59°F | 32% | 19% | 12 h 50 min |
| September 9 | 80°F | 59°F | 32% | 19% | 12 h 50 min |
| September 10 | 80°F | 59°F | 32% | 19% | 12 h 40 min |
| September 11 | 79°F | 58°F | 32% | 19% | 12 h 40 min |
| September 12 | 79°F | 58°F | 32% | 19% | 12 h 40 min |
| September 13 | 78°F | 58°F | 32% | 19% | 12 h 40 min |
| September 14 | 78°F | 57°F | 32% | 19% | 12 h 30 min |
| September 15 | 78°F | 57°F | 32% | 19% | 12 h 30 min |
| September 16 | 77°F | 57°F | 32% | 19% | 12 h 30 min |
| September 17 | 77°F | 56°F | 33% | 19% | 12 h 30 min |
| September 18 | 76°F | 56°F | 33% | 19% | 12 h 20 min |
| September 19 | 76°F | 55°F | 33% | 20% | 12 h 20 min |
| September 20 | 76°F | 55°F | 33% | 20% | 12 h 20 min |
| September 21 | 75°F | 55°F | 33% | 20% | 12 h 20 min |
| September 22 | 75°F | 54°F | 33% | 20% | 12 h 10 min |
| September 23 | 74°F | 54°F | 33% | 20% | 12 h 10 min |
| September 24 | 74°F | 53°F | 33% | 20% | 12 h 10 min |
| September 25 | 74°F | 53°F | 33% | 20% | 12 h 10 min |
| September 26 | 73°F | 53°F | 33% | 20% | 12 h |
| September 27 | 73°F | 52°F | 33% | 20% | 12 h |
| September 28 | 72°F | 52°F | 33% | 20% | 12 h |
| September 29 | 72°F | 51°F | 33% | 20% | 11 h 50 min |
| September 30 | 72°F | 51°F | 33% | 20% | 11 h 50 min |
- Normal high
- 77°FSeptember average
- Normal low
- 57°FSeptember average
- Precipitation
- 4.18 inmonth total
- Days with precipitation
- 100.01 inch or more
- Days at 90°F or more
- 2
- 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
- 13
- Sunshine
- 74%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00449181; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Winchester in September?
On a given September day the chance of 0.01 inch or more is 32% on average, highest around September 26 (33%). In all, 4.18 in falls on 10 days of a normal September, 1 of them with an inch or more.
In a normal September in Winchester, 2 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00449181.
What are the records for September in Winchester?
The warmest September temperature on this station's record (since 1982) is 98°F, on September 12, 2019; the coldest is 35°F, on September 26, 1983. The wettest September brought 10.72 in (2004).
Source: records: ACIS, station USC00449181. Records and recent months use complete months only.
How does September in Winchester compare across Virginia?
Across the 81 places PlainClimate covers in Virginia, September normal highs run from 73°F in Floyd to 85°F in Chesapeake; Winchester's is 77°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Winchester in August84°F by day, 64°F at night
- Winchester in October66°F by day, 45°F at night
- Winchester through the yearEvery month, frost dates, records and recent years
- Virginia in SeptemberThe statewide normal and the warmest and coolest places
- Chesapeake: Virginia's warmest Septembernormal high 85°F