Grimsby Weather in September
Grimsby in September
The short of it: Grimsby in September averages a high of 22 °C (71 °F) and a low of 13 °C (55 °F), with 74 mm (2.9 in) of rain and about 12 h 26 min of daylight. Rated 3 of 5 for a visit; the best months are July and June. Source: TerraClimate climate normals, 1991–2020.
Average high 22° · low 13° · rain 74 mm · daylight 12 h 26 min
✦✦✦ Fair for a visit · best months: July & June
Thirty years of records give Grimsby an average September high of 22°, a low of 13° and some 74 mm of rain. Much like August: highs about 22°, nights near 13°. Easy travelling weather. Wet spells are common — about 74 mm, the 5th wettest month.
The sun is up for about 12 h 26 min in mid-September, 90 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 July and June.
Against its neighbours, Grimsby runs cooler than most and drier than most in September. Stoney Creek, 16 km to the W, is 1° warmer by day.
September in Grimsby, by the numbers
- Warmth rank
- 4th warmest of 12
- Rain rank
- 5th wettest of 12
- Versus August
- 4° colder, 5.0 mm less rain
- Versus October
- 7° warmer
- Day–night spread
- 9°
- Snow season
- Dec–Mar
- Daylight, mid-month
- 12 h 26 min
- Average wind
- 12 km/h
Neighbouring Towns
September averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| Stoney CreekOntario | 16 km W | 23° | 13° | 78 mm |
| HamiltonOntario | 24 km WNW | 23° | 13° | 78 mm |
| St. CatharinesOntario | 26 km E | 22° | 13° | 76 mm |
| OakvilleOntario | 29 km NNW | 22° | 13° | 64 mm |
| BurlingtonOntario | 30 km NW | 22° | 12° | 75 mm |
| AncasterOntario | 34 km W | 22° | 12° | 80 mm |
| WellandOntario | 35 km SE | 22° | 13° | 78 mm |
| Niagara FallsOntario | 42 km ESE | 22° | 13° | 79 mm |