Weather Big Island long-term weather forecast

Long-term weather forecast for Big Island for ten days.

Wednesday, Apr 29

16 / 6°C

0.0 mm

13 km/h

sunrise 6:16 am
sunset 8:21 pm

HOURLY

During the day morning overcast, later morning partly cloudy, in the afternoon overcast. The highest temperature 16 °C. At night overcast. The lowest temperature 6 °C.

Interactive map weather Ontario

GPS: 43.4173; -80.2619

altitude: 303 m
local time:

PLACES IN THE AREA

Weather forecast Big Island, Ontario extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Wednesday 04/29/2026
2 AM	overcast	8 °C 7 °C	0.0 mm	0.7 m/s 3 km/h west-southwest	1015 hPa	87 %	6 °C	100 %	0%	2%	47%	100%
8 AM	partly cloudy	7 °C 5 °C	0.0 mm	1.8 m/s 6 km/h north	1019 hPa	84 %	4 °C	16 %	0%	16%	0%	0%
2 PM	overcast	16 °C 14 °C	0.0 mm	3.5 m/s 13 km/h west-northwest	1018 hPa	47 %	4 °C	100 %	0%	78%	68%	100%
8 PM	overcast	11 °C 9 °C	0.0 mm	3.5 m/s 13 km/h north	1018 hPa	53 %	2 °C	100 %	0%	0%	0%	100%
Thursday 04/30/2026
2 AM	overcast	6 °C 4 °C	0.0 mm	1.8 m/s 6 km/h northeast	1019 hPa	63 %	0 °C	100 %	0%	32%	70%	100%
8 AM	overcast	6 °C 4 °C	0.0 mm	2.4 m/s 9 km/h east-northeast	1018 hPa	66 %	0 °C	100 %	0%	23%	96%	89%
2 PM	overcast	12 °C 9 °C	0.0 mm	4.5 m/s 16 km/h east	1016 hPa	42 %	0 °C	100 %	0%	3%	93%	95%
8 PM	overcast	9 °C 6 °C	0.0 mm	4.5 m/s 16 km/h east-northeast	1014 hPa	52 %	0 °C	100 %	0%	0%	99%	77%

Big Island, Ontario - information

State: Ontario

GPS coordinates: 43.4173; -80.2619

Time zone: America / Toronto time difference in hours with time in US is -6 hours

Altitude: 303 m
The administrative part:

Ontario, Toronto

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Data source

Weather forecast for Big Island is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Astronomical information Big Island

data are always in the local time

Sun and light

April 29, 2026

Sunrise:	Sunset:
6:16 am	8:21 pm
Noon:	Length of day:
1:18 pm	14:04
Start of civil twilight*:	End of civil twilight*:
5:44 am	8:52 pm
Start of nautical twilight*:	End of nautical twilight*:
5:07 am	9:30 pm
Start of astronomical twilight*:	End of astronomical twilight*:
4:25 am	10:12 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
04/28/2026 5:32 pm	04/29/2026 5:03 am
Next new moon:	Next full moon:
05/16/2026	05/01/2026