Suffolk weather in September: Suffolk, Virginia: normal highs, lows, rain and records for September
Suffolk in September has a normal high of 80°F and a normal low of 63°F, a daily mean of 71°F, falling from 83°F on the 1st to 76°F by the 30th. Measurable precipitation falls on 10 days in a normal September, 5.80 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 26°C and low of 17°C, 147 mm of precipitation in September.
- NOAA stationSuffolk Lake Kilby
- Station IDUSC00448192
- Location36.73°N 76.60°W
- Elevation22 ft (7 m)
- Population103,105
- Jan 49° 31°
- Feb 52° 33°
- Mar 59° 39°
- Apr 69° 48°
- May 76° 57°
- Jun 83° 65°
- Jul 87° 70°
- Aug 85° 69°
- Sep 80° 63°
- Oct 71° 52°
- Nov 61° 41°
- Dec 53° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Suffolk in September?
The normal high is 80°F and the normal low 63°F, for a daily mean of 71.3°F. September is 5.5°F cooler than August and 10.3°F warmer than October. September is the 4th warmest month of the year in Suffolk and the wettest. Across the month the normal high falls 7°F, from 83°F on September 1 to 76°F on September 30. From one year to the next September's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 69°F and 73°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 32%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 83°F | 67°F | 32% | 23% |
| September 8 | 82°F | 65°F | 31% | 22% |
| September 15 | 80°F | 64°F | 30% | 20% |
| September 22 | 78°F | 61°F | 30% | 20% |
| September 30 | 76°F | 58°F | 28% | 19% |
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 | 83°F | 67°F | 32% | 23% | 13 h |
| September 2 | 83°F | 67°F | 32% | 22% | 13 h |
| September 3 | 83°F | 66°F | 32% | 22% | 13 h |
| September 4 | 83°F | 66°F | 32% | 22% | 12 h 50 min |
| September 5 | 82°F | 66°F | 32% | 22% | 12 h 50 min |
| September 6 | 82°F | 66°F | 32% | 22% | 12 h 50 min |
| September 7 | 82°F | 66°F | 31% | 22% | 12 h 50 min |
| September 8 | 82°F | 65°F | 31% | 22% | 12 h 40 min |
| September 9 | 81°F | 65°F | 31% | 21% | 12 h 40 min |
| September 10 | 81°F | 65°F | 31% | 21% | 12 h 40 min |
| September 11 | 81°F | 65°F | 30% | 21% | 12 h 40 min |
| September 12 | 81°F | 64°F | 30% | 21% | 12 h 40 min |
| September 13 | 80°F | 64°F | 30% | 21% | 12 h 30 min |
| September 14 | 80°F | 64°F | 30% | 20% | 12 h 30 min |
| September 15 | 80°F | 64°F | 30% | 20% | 12 h 30 min |
| September 16 | 80°F | 63°F | 30% | 20% | 12 h 30 min |
| September 17 | 79°F | 63°F | 30% | 20% | 12 h 20 min |
| September 18 | 79°F | 63°F | 30% | 20% | 12 h 20 min |
| September 19 | 79°F | 62°F | 30% | 20% | 12 h 20 min |
| September 20 | 79°F | 62°F | 30% | 20% | 12 h 20 min |
| September 21 | 78°F | 62°F | 30% | 20% | 12 h 10 min |
| September 22 | 78°F | 61°F | 30% | 20% | 12 h 10 min |
| September 23 | 78°F | 61°F | 29% | 20% | 12 h 10 min |
| September 24 | 77°F | 60°F | 29% | 20% | 12 h 10 min |
| September 25 | 77°F | 60°F | 29% | 19% | 12 h 10 min |
| September 26 | 77°F | 60°F | 29% | 19% | 12 h |
| September 27 | 76°F | 59°F | 29% | 19% | 12 h |
| September 28 | 76°F | 59°F | 29% | 19% | 12 h |
| September 29 | 76°F | 59°F | 28% | 19% | 12 h |
| September 30 | 76°F | 58°F | 28% | 19% | 11 h 50 min |
- Normal high
- 80°FSeptember average
- Normal low
- 63°FSeptember average
- Precipitation
- 5.80 inmonth total
- Days with precipitation
- 100.01 inch or more
- Days at 90°F or more
- 2
- Daylight
- 13 h to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 29
- Days at 80°F or more
- 18
- Sunshine
- 76%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00448192; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Suffolk in September?
On a given September day the chance of 0.01 inch or more is 30% on average, highest around September 1 (32%). In all, 5.80 in falls on 10 days of a normal September, 2 of them with an inch or more.
In a normal September in Suffolk, 2 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00448192.
What are the records for September in Suffolk?
The warmest September temperature on this station's record (since 1945) is 101°F, on September 25, 2004; the coldest is 39°F, on September 25, 1950. The wettest September brought 23.06 in (1999).
The September mean against the 1991-2020 normal of 71.3°F: 2021 71.5°F (+0.2), 2022 71.3°F (at normal), 2023 72.0°F (+0.7), 2024 71.4°F (+0.1), 2025 71.1°F (−0.2), 2026 75.0°F (+3.7). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 71.5°F | +0.2°F | 4.15 in |
| 2022 | 71.3°F | at normal | 5.87 in |
| 2023 | 72.0°F | +0.7°F | 3.68 in |
| 2024 | 71.4°F | +0.1°F | 6.19 in |
| 2025 | 71.1°F | −0.2°F | 4.45 in |
| 2026 | 75.0°F | +3.7°F | 6.67 in |
Source: records: ACIS, station USC00448192; recent months: ACIS, station USC00448192. Records and recent months use complete months only.
How does September in Suffolk 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; Suffolk's is 80°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.