Chalk River Weather in September
Chalk River in September
The short of it: Chalk River in September averages a high of 21 °C (69 °F) and a low of 9 °C (47 °F), with 86 mm (3.4 in) of rain and about 12 h 28 min of daylight. Rated 3 of 5 for a visit; the best months are June and August. Source: TerraClimate climate normals, 1991–2020.
Average high 21° · low 9° · rain 86 mm · daylight 12 h 28 min
✦✦✦ Fair for a visit · best months: June & August
Thirty years of records give Chalk River an average September high of 21°, a low of 9° and some 86 mm of rain. The year turns hard here: highs drop 4° from August to about 21°, with nights near 9°. Wet spells are common — about 86 mm, the 4th wettest month.
The sun is up for about 12 h 28 min in mid-September, 100 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 June and August.
Against its neighbours, Chalk River runs cooler than most and wetter than most in September. Deep River, 10 km to the NNW, sees much the same highs.
September in Chalk River, by the numbers
- Warmth rank
- 4th warmest of 12
- Rain rank
- 4th wettest of 12
- Versus August
- 4° colder, 0.0 mm more rain
- Versus October
- 8° warmer
- Day–night spread
- 12°
- Snow season
- Nov–Apr
- Daylight, mid-month
- 12 h 28 min
- Average wind
- 9 km/h
Neighbouring Towns
September averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| Deep RiverOntario | 10 km NNW | 21° | 9° | 89 mm |
| PetawawaOntario | 19 km SE | 21° | 9° | 83 mm |
| PembrokeOntario | 34 km SE | 21° | 9° | 82 mm |
| Fort-CoulongeQuebec | 58 km ESE | 21° | 9° | 82 mm |
| EganvilleOntario | 60 km SSE | 21° | 8° | 79 mm |
| CobdenOntario | 61 km SE | 22° | 9° | 78 mm |
| RenfrewOntario | 85 km SE | 22° | 9° | 71 mm |
| ShawvilleQuebec | 88 km ESE | 21° | 9° | 78 mm |