14-day forecast · Alliston
30-day outlook →TonightSep 1770°52°Partly cloudyChance of showers30%
Day
- Wind
- NW 6 mph
- Wind gusts
- 20 mph
- Precipitation
- 30% · 0 in
- 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
- 52°
- Wind
- NW 6 mph
- Precipitation
- 30%
Sunrise7:01 AM
Sunset7:26 PM
Daylight12 h 25 min
Normal66° / 46°
FriSep 1866°45°A mix of sun and cloudClear12%
Day
Clearing. High 19. UV index 6 or high.
- Wind
- NW 9 mph
- Precipitation
- 12% · 0 in
- UV index (max)
- 6 High
- Air quality (AQHI)
- 2 · Low risk
Night
Clear. Low 7.
- Low
- 45°
- Wind
- NW 9 mph
Sunrise7:02 AM
Sunset7:24 PM
Daylight12 h 22 min
SatSep 1964°48°CloudyCloudy73%
Day
Cloudy. High 18.
- Precipitation
- 73% · 0.09 in
- UV index (max)
- 5 Moderate
Night
Cloudy. Low 9.
- Low
- 48°
Sunrise7:03 AM
Sunset7:22 PM
Daylight12 h 19 min
SunSep 2066°43°CloudyCloudy periods20%
Day
Cloudy. High 19.
- Precipitation
- 20% · 0.01 in
- UV index (max)
- 4 Moderate
Night
Cloudy periods. Low 6.
- Low
- 43°
Sunrise7:04 AM
Sunset7:20 PM
Daylight12 h 16 min
MonSep 2163°43°A mix of sun and cloudCloudy periods18%
Day
A mix of sun and cloud. High 17.
- Precipitation
- 18% · 0 in
- UV index (max)
- 3 Moderate
Night
Cloudy periods. Low 6.
- Low
- 43°
Sunrise7:05 AM
Sunset7:19 PM
Daylight12 h 13 min
TueSep 2263°48°A mix of sun and cloudChance of showers30%
Day
A mix of sun and cloud. High 17.
- Precipitation
- 30% · 0.25 in
- UV index (max)
- 3 Moderate
Night
Cloudy periods with 30 percent chance of showers. Low 9.
- Low
- 48°
- Precipitation
- 30%
Sunrise7:06 AM
Sunset7:17 PM
Daylight12 h 10 min
WedSep 2366°58°Chance of showers40%
Day
A mix of sun and cloud with 40 percent chance of showers. High 19.
- Precipitation
- 40% · 0.12 in
- UV index (max)
- 4 Moderate
Night
Low 58.
- Low
- 58°
Sunrise7:08 AM
Sunset7:15 PM
Daylight12 h 7 min
Days 8–14 · trend, lower confidence
ThuSep 2464°50°ShowersNight low 50°71%
Day
Showers. High 64.
- Wind
- S 18 mph
- Wind gusts
- 41 mph
- Precipitation
- 71% · 0.09 in
- UV index (max)
- 3 Moderate
Night
Low 50.
- Low
- 50°
Sunrise7:09 AM
Sunset7:13 PM
Daylight12 h 4 min
SourceExtended outlook
FriSep 2553°44°ShowersNight low 44°81%
Day
Showers. High 53.
- Wind
- NW 18 mph
- Wind gusts
- 26 mph
- Precipitation
- 81% · 0.25 in
- UV index (max)
- 3 Moderate
Night
Low 44.
- Low
- 44°
Sunrise7:10 AM
Sunset7:11 PM
Daylight12 h 1 min
SourceExtended outlook
SatSep 2657°43°SunnyNight low 43°6%
Day
Sunny. High 57.
- Wind
- NW 15 mph
- Wind gusts
- 23 mph
- Precipitation
- 6% · 0 in
- UV index (max)
- 4 Moderate
Night
Low 43.
- Low
- 43°
Sunrise7:11 AM
Sunset7:09 PM
Daylight11 h 58 min
SourceExtended outlook
SunSep 2769°51°SunnyNight low 51°6%
Day
Sunny. High 69.
- Wind
- W 9 mph
- Wind gusts
- 18 mph
- Precipitation
- 6% · 0 in
- UV index (max)
- 6 High
Night
Low 51.
- Low
- 51°
Sunrise7:12 AM
Sunset7:07 PM
Daylight11 h 55 min
SourceExtended outlook
MonSep 2869°55°Mostly cloudyNight low 55°13%
Day
Mostly cloudy. High 69.
- Wind
- SW 12 mph
- Wind gusts
- 18 mph
- Precipitation
- 13% · 0 in
- UV index (max)
- 5 Moderate
Night
Low 55.
- Low
- 55°
Sunrise7:13 AM
Sunset7:06 PM
Daylight11 h 52 min
SourceExtended outlook
TueSep 2972°60°Mostly cloudyNight low 60°8%
Day
Mostly cloudy. High 72.
- Wind
- W 10 mph
- Wind gusts
- 23 mph
- Precipitation
- 8% · 0 in
- UV index (max)
- 6 High
Night
Low 60.
- Low
- 60°
Sunrise7:15 AM
Sunset7:04 PM
Daylight11 h 49 min
SourceExtended outlook
WedSep 3060°48°SunnyNight low 48°57%
Day
Sunny. High 60.
- Wind
- NW 14 mph
- Wind gusts
- 21 mph
- Precipitation
- 57% · 0.07 in
- UV index (max)
- 4 Moderate
Night
Low 48.
- Low
- 48°
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 | 70° | 52° | 30% · 0 in | NW 6 mph | 5 |
| Fri Sep 18 | Partly cloudy | 66° | 45° | 12% · 0 in | NW 9 mph | 6 |
| Sat Sep 19 | Mostly cloudy | 64° | 48° | 73% · 0.09 in | SE 13 mph | 5 |
| Sun Sep 20 | Mostly cloudy | 66° | 43° | 20% · 0.01 in | N 11 mph | 4 |
| Mon Sep 21 | Partly cloudy | 63° | 43° | 18% · 0 in | E 15 mph | 3 |
| Tue Sep 22 | Partly cloudy | 63° | 48° | 30% · 0.25 in | E 17 mph | 3 |
| Wed Sep 23 | Showers | 66° | 58° | 40% · 0.12 in | S 13 mph | 4 |
| Thu Sep 24 | Showers | 64° | 50° | 71% · 0.09 in | S 18 mph | 3 |
| Fri Sep 25 | Showers | 53° | 44° | 81% · 0.25 in | NW 18 mph | 3 |
| Sat Sep 26 | Sunny | 57° | 43° | 6% · 0 in | NW 15 mph | 4 |
| Sun Sep 27 | Sunny | 69° | 51° | 6% · 0 in | W 9 mph | 6 |
| Mon Sep 28 | Mostly cloudy | 69° | 55° | 13% · 0 in | SW 12 mph | 5 |
| Tue Sep 29 | Mostly cloudy | 72° | 60° | 8% · 0 in | W 10 mph | 6 |
| Wed Sep 30 | Sunny | 60° | 48° | 57% · 0.07 in | NW 14 mph | 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 732 ft · Population 18,809 · Time zone America/Toronto