30-day outlook · Grimsby
14-day forecast →Sep 1721°14°40%
1820°12°First quarter
1919°14°70%
2020°10°70%
2117°11°77%
2217°12°60%
2319°15°40%
2421°14°68%
2515°12°57%
2617°10°Full moon
2720°13°5%
2820°16°11%
2924°16°13%
3019°12°63%
Oct 1avg18°10°
2avg18°9°
3avg18°9°Last quarter
4avg18°9°
5avg17°9°
6avg17°9°
7avg17°8°
8avg17°8°
9avg17°8°
10avg16°8°New moon
11avg16°8°
12avg16°7°
13avg16°7°
14avg15°7°
15avg15°7°
16avg15°7°
TodayForecast, days 1–14Avg — typical for the date, not a forecast
Days 1–14 at a glance
Today →| Day | Weather | High | Low | Precip | Source |
|---|---|---|---|---|---|
| Today Sep 17 | Partly cloudy | 21° | 14° | 40% · 0.1 mm | Forecast |
| Fri Sep 18 | Partly cloudy | 20° | 12° | 8% · 0 mm | Forecast |
| Sat Sep 19 | Showers | 19° | 14° | 70% · 5 mm | Forecast |
| Sun Sep 20 | Showers | 20° | 10° | 70% · 3 mm | Forecast |
| Mon Sep 21 | Partly cloudy | 17° | 11° | 77% · 4 mm | Forecast |
| Tue Sep 22 | Showers | 17° | 12° | 60% · 19 mm | Forecast |
| Wed Sep 23 | Showers | 19° | 15° | 40% · 0.6 mm | Forecast |
| Thu Sep 24 | Mostly cloudy | 21° | 14° | 68% · 3 mm | Outlook |
| Fri Sep 25 | Showers | 15° | 12° | 57% · 1 mm | Outlook |
| Sat Sep 26 | Sunny | 17° | 10° | 4% · 0 mm | Outlook |
| Sun Sep 27 | Sunny | 20° | 13° | 5% · 0 mm | Outlook |
| Mon Sep 28 | Sunny | 20° | 16° | 11% · 0 mm | Outlook |
| Tue Sep 29 | Mostly cloudy | 24° | 16° | 13% · 0 mm | Outlook |
| Wed Sep 30 | Sunny | 19° | 12° | 63% · 5 mm | Outlook |
Days 15–30 · what is typical
No forecast is reliable beyond two weeks, so these are the normals for Grimsby on those dates: how highs and lows usually change, how much rain or snow to expect, daylight and the Moon.
| Dates | Normal high | Normal low | Precip | Daylight | Moon |
|---|---|---|---|---|---|
| Oct 1–3 3 days | 18° | 10° → 9° | ≈8 mm | 11 h 43 → 11 h 38 | Last quarter Oct 3 |
| Oct 4–10 7 days | 18° → 16° | 9° → 8° | ≈18 mm | 11 h 35 → 11 h 17 | New moon Oct 10 |
| Oct 11–16 6 days | 16° → 15° | 8° → 7° | ≈15 mm | 11 h 14 → 11 h 0 | — |
Climate normals 1981–2010, Vineland Rittenhouse station · Environment and Climate Change Canada
Days 1–7: Environment and Climate Change Canada (St. Catharines - Grimsby - Northern Niagara Region) · days 8–14: WeatherAPI.com · days 15–30: Climate normals 1981–2010, Vineland Rittenhouse station · Environment and Climate Change Canada · 43.2001°N, 79.5663°W