14-day forecast · Alliston
30-day outlook →TonightSep 1721°11°Partly cloudyChance of showers30%
Day
- Wind
- NW 10 km/h
- Wind gusts
- 33 km/h
- Precipitation
- 30% · 0 mm
- UV index (max)
- 5 Moderate
- Air quality (AQHI)
- 2 · Low risk
Night
Mainly cloudy. 30 percent chance of showers early this evening. Clearing this evening. Low 11.
- Low
- 11°
- Wind
- NW 10 km/h
- Precipitation
- 30%
Sunrise7:01 AM
Sunset7:26 PM
Daylight12 h 25 min
Normal19° / 8°
FriSep 1819°7°A mix of sun and cloudClear12%
Day
Clearing. High 19. UV index 6 or high.
- Wind
- NW 15 km/h
- Precipitation
- 12% · 0 mm
- UV index (max)
- 6 High
- Air quality (AQHI)
- 2 · Low risk
Night
Clear. Low 7.
- Low
- 7°
- Wind
- NW 15 km/h
Sunrise7:02 AM
Sunset7:24 PM
Daylight12 h 22 min
SatSep 1918°9°CloudyCloudy73%
Day
Cloudy. High 18.
- Precipitation
- 73% · 2 mm
- UV index (max)
- 5 Moderate
Night
Cloudy. Low 9.
- Low
- 9°
Sunrise7:03 AM
Sunset7:22 PM
Daylight12 h 19 min
SunSep 2019°6°CloudyCloudy periods20%
Day
Cloudy. High 19.
- Precipitation
- 20% · 0.1 mm
- UV index (max)
- 4 Moderate
Night
Cloudy periods. Low 6.
- Low
- 6°
Sunrise7:04 AM
Sunset7:20 PM
Daylight12 h 16 min
MonSep 2117°6°A mix of sun and cloudCloudy periods18%
Day
A mix of sun and cloud. High 17.
- Precipitation
- 18% · 0 mm
- UV index (max)
- 3 Moderate
Night
Cloudy periods. Low 6.
- Low
- 6°
Sunrise7:05 AM
Sunset7:19 PM
Daylight12 h 13 min
TueSep 2217°9°A mix of sun and cloudChance of showers30%
Day
A mix of sun and cloud. High 17.
- Precipitation
- 30% · 6 mm
- UV index (max)
- 3 Moderate
Night
Cloudy periods with 30 percent chance of showers. Low 9.
- Low
- 9°
- Precipitation
- 30%
Sunrise7:06 AM
Sunset7:17 PM
Daylight12 h 10 min
WedSep 2319°15°Chance of showers40%
Day
A mix of sun and cloud with 40 percent chance of showers. High 19.
- Precipitation
- 40% · 3 mm
- UV index (max)
- 4 Moderate
Night
Low 15.
- Low
- 15°
Sunrise7:08 AM
Sunset7:15 PM
Daylight12 h 7 min
Days 8–14 · trend, lower confidence
ThuSep 2418°10°ShowersNight low 10°71%
Day
Showers. High 18.
- Wind
- S 30 km/h
- Wind gusts
- 67 km/h
- Precipitation
- 71% · 2 mm
- UV index (max)
- 3 Moderate
Night
Low 10.
- Low
- 10°
Sunrise7:09 AM
Sunset7:13 PM
Daylight12 h 4 min
SourceExtended outlook
FriSep 2511°7°ShowersNight low 7°81%
Day
Showers. High 11.
- Wind
- NW 29 km/h
- Wind gusts
- 41 km/h
- Precipitation
- 81% · 6 mm
- UV index (max)
- 3 Moderate
Night
Low 7.
- Low
- 7°
Sunrise7:10 AM
Sunset7:11 PM
Daylight12 h 1 min
SourceExtended outlook
SatSep 2614°6°SunnyNight low 6°6%
Day
Sunny. High 14.
- Wind
- NW 24 km/h
- Wind gusts
- 38 km/h
- Precipitation
- 6% · 0 mm
- UV index (max)
- 4 Moderate
Night
Low 6.
- Low
- 6°
Sunrise7:11 AM
Sunset7:09 PM
Daylight11 h 58 min
SourceExtended outlook
SunSep 2721°10°SunnyNight low 10°6%
Day
Sunny. High 21.
- Wind
- W 14 km/h
- Wind gusts
- 29 km/h
- Precipitation
- 6% · 0 mm
- UV index (max)
- 6 High
Night
Low 10.
- Low
- 10°
Sunrise7:12 AM
Sunset7:07 PM
Daylight11 h 55 min
SourceExtended outlook
MonSep 2821°13°Mostly cloudyNight low 13°13%
Day
Mostly cloudy. High 21.
- Wind
- SW 19 km/h
- Wind gusts
- 30 km/h
- Precipitation
- 13% · 0 mm
- UV index (max)
- 5 Moderate
Night
Low 13.
- Low
- 13°
Sunrise7:13 AM
Sunset7:06 PM
Daylight11 h 52 min
SourceExtended outlook
TueSep 2922°15°Mostly cloudyNight low 15°8%
Day
Mostly cloudy. High 22.
- Wind
- W 16 km/h
- Wind gusts
- 37 km/h
- Precipitation
- 8% · 0 mm
- UV index (max)
- 6 High
Night
Low 15.
- Low
- 15°
Sunrise7:15 AM
Sunset7:04 PM
Daylight11 h 49 min
SourceExtended outlook
WedSep 3016°9°SunnyNight low 9°57%
Day
Sunny. High 16.
- Wind
- NW 23 km/h
- Wind gusts
- 35 km/h
- Precipitation
- 57% · 2 mm
- UV index (max)
- 4 Moderate
Night
Low 9.
- Low
- 9°
Sunrise7:16 AM
Sunset7:02 PM
Daylight11 h 46 min
SourceExtended outlook
14 days at a glance
Today →| Day | Weather | High | Low | Precip | Wind | UV |
|---|---|---|---|---|---|---|
| Today Sep 17 | Partly cloudy | 21° | 11° | 30% · 0 mm | NW 10 km/h | 5 |
| Fri Sep 18 | Partly cloudy | 19° | 7° | 12% · 0 mm | NW 15 km/h | 6 |
| Sat Sep 19 | Mostly cloudy | 18° | 9° | 73% · 2 mm | SE 20 km/h | 5 |
| Sun Sep 20 | Mostly cloudy | 19° | 6° | 20% · 0.1 mm | N 18 km/h | 4 |
| Mon Sep 21 | Partly cloudy | 17° | 6° | 18% · 0 mm | E 24 km/h | 3 |
| Tue Sep 22 | Partly cloudy | 17° | 9° | 30% · 6 mm | E 27 km/h | 3 |
| Wed Sep 23 | Showers | 19° | 15° | 40% · 3 mm | S 21 km/h | 4 |
| Thu Sep 24 | Showers | 18° | 10° | 71% · 2 mm | S 30 km/h | 3 |
| Fri Sep 25 | Showers | 11° | 7° | 81% · 6 mm | NW 29 km/h | 3 |
| Sat Sep 26 | Sunny | 14° | 6° | 6% · 0 mm | NW 24 km/h | 4 |
| Sun Sep 27 | Sunny | 21° | 10° | 6% · 0 mm | W 14 km/h | 6 |
| Mon Sep 28 | Mostly cloudy | 21° | 13° | 13% · 0 mm | SW 19 km/h | 5 |
| Tue Sep 29 | Mostly cloudy | 22° | 15° | 8% · 0 mm | W 16 km/h | 6 |
| Wed Sep 30 | Sunny | 16° | 9° | 57% · 2 mm | NW 23 km/h | 4 |
Weather map — Alliston
Alliston →Forecast: Environment and Climate Change Canada (Innisfil - New Tecumseth - Angus), issued 3:30 PM · Days 8–14: WeatherAPI.com · weather.gc.ca · 44.1501°N, 79.8663°W · Elevation 223 m · Population 18,809 · Time zone America/Toronto