Sumner Weather in September
Sumner in September
The short of it: Sumner in September averages a high of 27 °C (81 °F) and a low of 14 °C (57 °F), with 77 mm (3.0 in) of rain and about 12 h 23 min of daylight. Rated 3 of 5 for a visit; the best months are May and October. Source: TerraClimate climate normals, 1991–2020.
Average high 81° · low 57° · rain 3.0 in. · daylight 12 h 23 min
✦✦✦ Fair for a visit · best months: May & October
September in Sumner brings afternoons near 81° and nights around 57°, with about 3.0 in. of rain over the month. Much like August: highs about 81°, nights near 57°. Easy travelling weather. Wet spells are common — about 3.0 in., the 10th wettest month.
The sun is up for about 12 h 23 min in mid-September, 77 minutes less than a month before.
For the traveller: pack light clothes and a jacket for the evening, and an oilskin besides. The Almanac rates September 3 of 5 for a visit; the finest months here are May and October.
Against its neighbours, Sumner runs cooler than most and wetter than most in September. Bridgeport, 6 mi to the E, sees much the same highs.
September in Sumner, by the numbers
- Warmth rank
- 4th warmest of 12
- Rain rank
- 10th wettest of 12
- Versus August
- 5° colder, 0.2 in. less rain
- Versus October
- 12° warmer
- Day–night spread
- 24°
- Snow season
- Dec–Feb
- Daylight, mid-month
- 12 h 23 min
- Average wind
- 5 mph
Neighbouring Towns
September averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| BridgeportIllinois | 6 mi E | 81° | 57° | 3.0 in. |
| LawrencevilleIllinois | 10 mi E | 81° | 58° | 3.0 in. |
| OlneyIllinois | 12 mi W | 81° | 57° | 3.0 in. |
| West SalemIllinois | 16 mi SSW | 81° | 57° | 3.0 in. |
| VincennesIndiana | 18 mi E | 82° | 58° | 3.0 in. |
| OblongIllinois | 20 mi N | 81° | 56° | 3.2 in. |
| RobinsonIllinois | 21 mi NNE | 81° | 57° | 3.2 in. |
| Mount CarmelIllinois | 22 mi SSE | 82° | 58° | 3.0 in. |