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Mattawa ON Weather - Cloudy
Cloudy
56°F
Updated 5:58 pm
Feels Like 46°F
Humidity 53%
Wind SW 14 mph
Barometer  30.24 in
Visibility 6 mi
Mattawa ON Weather - Cloudy
Cloudy
13°C
Updated 5:58 pm
Feels Like 8°C
Humidity 53%
Wind SW 23 km/h
Barometer  102.4 kPa
Visibility 10 km
Mattawa, ON Weather and Current Conditionsmattawa on weather forecast

Mattawa, ON Weather Forecast

Mattawa Ontario WeatherMattawa, Ontario Weather Weather Forecast
14 day API forecast for Mattawa, Ontario. Note. The 7-day weather forecast for Mattawa, Ontario is the most reliable and accurate forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days in advance.
Mattawa, ON Weather Forecast Dated: 558 PM Sun Oct 18 2026
Expect a cool pattern with plenty of sunshine and mostly dry weather over the coming period. generally humid conditions and a stable pattern will dominate.

Sunday, October 18, 2026

Mid-Morning
Mattawa Weather - 2026-10-18 - Morning - Partly Cloudy
6°C 43°F
Partly Cloudy
Mid-Afternoon
Mattawa Weather - 2026-10-18 - Afternoon - Overcast
15°C 58°F
Overcast
Early-Evening
Mattawa Weather - 2026-10-18 - Evening - Sunny
10°C 50°F
Sunny
Refreshing around 15°C 58°F, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds turning from the SSW to the SW at 22 km/h 14 mph. Gusts up to 61 km/h 38 mph.

Monday, October 19, 2026

Mid-Morning
Mattawa Weather - 2026-10-19 - Morning - Sunny
10°C 49°F
Sunny
Mid-Afternoon
Mattawa Weather - 2026-10-19 - Afternoon - Sunny
17°C 62°F
Sunny
Early-Evening
Mattawa Weather - 2026-10-19 - Evening - Partly Cloudy
9°C 47°F
Partly Cloudy
Mildly cool near 17°C 62°F, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds switching from the WSW to the WNW at 6 km/h 3 mph.

Tuesday, October 20, 2026

Mid-Morning
Mattawa Weather - 2026-10-20 - Morning - Sunny
5°C 41°F
Sunny
Mid-Afternoon
Mattawa Weather - 2026-10-20 - Afternoon - Sunny
13°C 56°F
Sunny
Early-Evening
Mattawa Weather - 2026-10-20 - Evening - Sunny
5°C 41°F
Sunny
Chilly near 13°C 56°F, sunny throughout the day, with lower humidity and steady pressure.

Wednesday, October 21, 2026

Mid-Morning
Mattawa Weather - 2026-10-21 - Morning - Sunny
3°C 38°F
Sunny
Mid-Afternoon
Mattawa Weather - 2026-10-21 - Afternoon - Sunny
15°C 60°F
Sunny
Early-Evening
Mattawa Weather - 2026-10-21 - Evening - Sunny
7°C 44°F
Sunny
Cool with a high near 15°C 60°F, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling.

Thursday, October 22, 2026

Mid-Morning
Mattawa Weather - 2026-10-22 - Morning - Partly Cloudy
7°C 45°F
Partly Cloudy
Mid-Afternoon
Mattawa Weather - 2026-10-22 - Afternoon - Sunny
13°C 55°F
Sunny
Early-Evening
Mattawa Weather - 2026-10-22 - Evening - Sunny
5°C 40°F
Sunny
Brisk around 13°C 55°F, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds moving from the NW to the NE at 7 km/h 5 mph.

Friday, October 23, 2026

Mid-Morning
Mattawa Weather - 2026-10-23 - Morning - Overcast
2°C 35°F
Overcast
Mid-Afternoon
Mattawa Weather - 2026-10-23 - Afternoon - Partly Cloudy
12°C 53°F
Partly Cloudy
Early-Evening
Mattawa Weather - 2026-10-23 - Evening - Sunny
6°C 42°F
Sunny
Cool and brisk at 12°C 53°F, cloudy in the morning, partly cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure.

Saturday, October 24, 2026

Mid-Morning
Mattawa Weather - 2026-10-24 - Morning - Sunny
3°C 38°F
Sunny
Mid-Afternoon
Mattawa Weather - 2026-10-24 - Afternoon - Sunny
14°C 57°F
Sunny
Early-Evening
Mattawa Weather - 2026-10-24 - Evening - Sunny
9°C 48°F
Sunny
Chilly near 14°C 57°F, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and barometric pressure falling.

Sunday, October 25, 2026

Mid-Morning
Mattawa Weather - 2026-10-25 - Morning - Scattered Showers
13°C 56°F
Scattered Showers
Mid-Afternoon
Mattawa Weather - 2026-10-25 - Afternoon - Sunny
16°C 62°F
Sunny
Early-Evening
Mattawa Weather - 2026-10-25 - Evening - Sunny
12°C 53°F
Sunny
Cool with a high near 16°C 62°F, scattered downpours possible, with lower humidity and steady pressure. Winds swinging from the SW to the WNW at 16 km/h 10 mph. Gusts up to 39 km/h 24 mph.

Monday, October 26, 2026

Mid-Morning
Mattawa Weather - 2026-10-26 - Morning - Overcast
2°C 36°F
Overcast
Mid-Afternoon
Mattawa Weather - 2026-10-26 - Afternoon - Overcast
8°C 46°F
Overcast
Early-Evening
Mattawa Weather - 2026-10-26 - Evening - Sunny
3°C 38°F
Sunny
Brisk around 8°C 46°F, overcast through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure.

Tuesday, October 27, 2026

Mid-Morning
Mattawa Weather - 2026-10-27 - Morning - Partly Cloudy
-1°C 31°F
Partly Cloudy
Mid-Afternoon
Mattawa Weather - 2026-10-27 - Afternoon - Sunny
7°C 45°F
Sunny
Early-Evening
Mattawa Weather - 2026-10-27 - Evening - Sunny
2°C 34°F
Sunny
Cool and brisk at 7°C 45°F, sunny throughout the day, with lower humidity and steady pressure.

Wednesday, October 28, 2026

Mid-Morning
Mattawa Weather - 2026-10-28 - Morning - Overcast
0°C 32°F
Overcast
Mid-Afternoon
Mattawa Weather - 2026-10-28 - Afternoon - Sunny
10°C 50°F
Sunny
Early-Evening
Mattawa Weather - 2026-10-28 - Evening - Sunny
4°C 39°F
Sunny
Chilly near 10°C 50°F, overcast in the morning, cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds shifting from the SW to the WSW at 10 km/h 6 mph.

Thursday, October 29, 2026

Mid-Morning
Mattawa Weather - 2026-10-29 - Morning - Overcast
3°C 37°F
Overcast
Mid-Afternoon
Mattawa Weather - 2026-10-29 - Afternoon - Overcast
12°C 53°F
Overcast
Early-Evening
Mattawa Weather - 2026-10-29 - Evening - Overcast
10°C 50°F
Overcast
Crisp with a high near 12°C 53°F, overcast throughout the day, with steady humidity and barometric pressure falling. Winds turning from the S to the SSW at 15 km/h 9 mph. Gusts up to 48 km/h 30 mph.

Friday, October 30, 2026

Mid-Morning
Mattawa Weather - 2026-10-30 - Morning - Light Rain
13°C 55°F
Light Rain
Mid-Afternoon
Mattawa Weather - 2026-10-30 - Afternoon - Light Rain
14°C 57°F
Light Rain
Early-Evening
Mattawa Weather - 2026-10-30 - Evening - Scattered Showers
12°C 53°F
Scattered Showers
Brisk around 14°C 57°F, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds switching from the SSW to the W at 23 km/h 15 mph. Gusts up to 48 km/h 30 mph.

Saturday, October 31, 2026

Mid-Morning
Mattawa Weather - 2026-10-31 - Morning - Cloudy
5°C 42°F
Cloudy
Mid-Afternoon
Mattawa Weather - 2026-10-31 - Afternoon - Sunny
12°C 54°F
Sunny
Early-Evening
Mattawa Weather - 2026-10-31 - Evening - Sunny
7°C 45°F
Sunny
Cool and brisk at 12°C 54°F, partly cloudy in the morning, cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds blowing from the WSW at 16 km/h 10 mph.

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Weather by the Numbers

Sun, 18th
Mattawa ON Weather - Sunday, Oct 18, 2026 - Partly Cloudy
Hi: 15°C 59°F
Lo: 1°C 34°F
Sunrise 07:37 AM
Sunset 06:23 PM
Wind SW 19 km/h12 mph
Dew Point 6°C42°F
uv Index 2
Barometric Pressure 102.5 kPa30.27 in
POP 5% *
Humidity 58%
Mon, 19th
Mattawa ON Weather - Monday, Oct 19, 2026 - Sunny
Hi: 17°C 62°F
Lo: 5°C 42°F
Sunrise 07:38 AM
Sunset 06:21 PM
Wind W 16 km/h10 mph
Dew Point 7°C44°F
uv Index 2
Barometric Pressure 102.7 kPa30.33 in
POP 3% *
Humidity 58%
Tue, 20th
Mattawa ON Weather - Tuesday, Oct 20, 2026 - Sunny
Hi: 13°C 56°F
Lo: 1°C 33°F
Sunrise 07:39 AM
Sunset 06:19 PM
Wind NNE 9 km/h5 mph
Dew Point 1°C34°F
uv Index 2
Barometric Pressure 103.3 kPa30.5 in
POP 2% *
Humidity 51%
Wed, 21st
Mattawa ON Weather - Wednesday, Oct 21, 2026 - Sunny
Hi: 15°C 60°F
Lo: -0°C 31°F
Sunrise 07:41 AM
Sunset 06:17 PM
Wind SSW 6 km/h4 mph
Dew Point -1°C31°F
uv Index 2
Barometric Pressure 102.7 kPa30.33 in
POP 1% *
Humidity 41%
Thu, 22nd
Mattawa ON Weather - Thursday, Oct 22, 2026 - Partly Cloudy
Hi: 13°C 55°F
Lo: 1°C 34°F
Sunrise 07:42 AM
Sunset 06:16 PM
Wind N 9 km/h6 mph
Dew Point 6°C43°F
uv Index 4
Barometric Pressure 102.3 kPa30.21 in
POP 9% *
Humidity 69%
Fri, 23rd
Mattawa ON Weather - Friday, Oct 23, 2026 - Partly Cloudy
Hi: 12°C 53°F
Lo: -1°C 30°F
Sunrise 07:44 AM
Sunset 06:14 PM
Wind ESE 6 km/h4 mph
Dew Point -0°C32°F
uv Index 3
Barometric Pressure 103.2 kPa30.47 in
POP 10% *
Humidity 53%
Sat, 24th
Mattawa ON Weather - Saturday, Oct 24, 2026 - Overcast
Hi: 15°C 59°F
Lo: -0°C 31°F
Sunrise 07:45 AM
Sunset 06:12 PM
Wind S 10 km/h6 mph
Dew Point -1°C30°F
uv Index 3
Barometric Pressure 103.3 kPa30.5 in
POP 3% *
Humidity 41%
Sun, 25th
Mattawa ON Weather - Sunday, Oct 25, 2026 - Partly Cloudy
Hi: 17°C 62°F
Lo: 6°C 43°F
Sunrise 07:46 AM
Sunset 06:11 PM
Wind SW 22 km/h13 mph
Dew Point 9°C49°F
uv Index 5
Barometric Pressure 102 kPa30.12 in
POP 14% *
Humidity 67%
Mon, 26th
Mattawa ON Weather - Monday, Oct 26, 2026 - Overcast
Hi: 8°C 47°F
Lo: -1°C 30°F
Sunrise 07:48 AM
Sunset 06:09 PM
Wind NW 9 km/h6 mph
Dew Point -2°C28°F
uv Index 2
Barometric Pressure 102.9 kPa30.39 in
POP 13% *
Humidity 53%
Tue, 27th
Mattawa ON Weather - Tuesday, Oct 27, 2026 - Sunny
Hi: 8°C 46°F
Lo: -3°C 26°F
Sunrise 07:49 AM
Sunset 06:08 PM
Wind WNW 7 km/h4 mph
Dew Point -8°C19°F
uv Index 3
Barometric Pressure 103.1 kPa30.45 in
POP 2% *
Humidity 40%
Wed, 28th
Mattawa ON Weather - Wednesday, Oct 28, 2026 - Overcast
Hi: 10°C 50°F
Lo: -3°C 27°F
Sunrise 07:51 AM
Sunset 06:06 PM
Wind W 15 km/h9 mph
Dew Point -1°C31°F
uv Index 2
Barometric Pressure 102.5 kPa30.27 in
POP 14% *
Humidity 57%
Thu, 29th
Mattawa ON Weather - Thursday, Oct 29, 2026 - Overcast
Hi: 13°C 55°F
Lo: -1°C 31°F
Sunrise 07:52 AM
Sunset 06:04 PM
Wind SSW 9 km/h6 mph
Dew Point 6°C42°F
uv Index 3
Barometric Pressure 102.2 kPa30.18 in
POP 20% *
Humidity 74%
Fri, 30th
Mattawa ON Weather - Friday, Oct 30, 2026 - Light Rain
Hi: 14°C 57°F
Lo: 9°C 47°F
Sunrise 07:53 AM
Sunset 06:03 PM
Wind SSW 26 km/h16 mph
Dew Point 12°C53°F
uv Index 3
Barometric Pressure 100.4 kPa29.65 in
POP 76% *
Humidity 89%
Sat, 31st
Mattawa ON Weather - Saturday, Oct 31, 2026 - Cloudy
Hi: 13°C 55°F
Lo: 3°C 38°F
Sunrise 07:55 AM
Sunset 06:01 PM
Wind WSW 16 km/h10 mph
Dew Point 6°C42°F
uv Index 3
Barometric Pressure 101.7 kPa30.03 in
POP 14% *
Humidity 71%
* POP = Probability of Precipitation. Data for 12:00 PM.