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Arnprior ON Weather - Sunny
Sunny
63°F
Updated 5:16 pm
Feels Like 55°F
Humidity 39%
Wind NNW 9 mph
Barometer  30.21 in
Visibility 6 mi
Arnprior ON Weather - Sunny
Sunny
17°C
Updated 5:16 pm
Feels Like 13°C
Humidity 39%
Wind NNW 14 km/h
Barometer  102.3 kPa
Visibility 10 km
Arnprior, ON Weather and Current Conditionsarnprior on weather forecast

Arnprior, ON Weather Forecast

Arnprior Ontario WeatherArnprior, Ontario Weather Weather Forecast
14 day API Arnprior, ON weather forecast. Note. Our 7-day weather forecast for Arnprior, Ontario is our most reliable and accurate forecast. This model should only be used as a likely scenario. Forecasting more than 7 days is difficult.
Arnprior, ON Weather Forecast Dated: 516 PM Fri Sep 18 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and a stable pattern will dominate.

Friday, September 18, 2026

Mid-Morning
Arnprior Weather - 2026-09-18 - Morning - Sunny
14°C 57°F
Sunny
Mid-Afternoon
Arnprior Weather - 2026-09-18 - Afternoon - Overcast
18°C 64°F
Overcast
Early-Evening
Arnprior Weather - 2026-09-18 - Evening - Cloudy
14°C 56°F
Cloudy
Refreshing around 18°C 64°F, sunny in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure. Winds turning from the NNW to the NNE at 13 km/h 8 mph.

Saturday, September 19, 2026

Mid-Morning
Arnprior Weather - 2026-09-19 - Morning - Overcast
8°C 46°F
Overcast
Mid-Afternoon
Arnprior Weather - 2026-09-19 - Afternoon - Sunny
16°C 60°F
Sunny
Early-Evening
Arnprior Weather - 2026-09-19 - Evening - Sunny
12°C 54°F
Sunny
Mildly cool near 16°C 60°F, overcast in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling.

Sunday, September 20, 2026

Mid-Morning
Arnprior Weather - 2026-09-20 - Morning - Overcast
10°C 50°F
Overcast
Mid-Afternoon
Arnprior Weather - 2026-09-20 - Afternoon - Sunny
18°C 65°F
Sunny
Early-Evening
Arnprior Weather - 2026-09-20 - Evening - Sunny
14°C 57°F
Sunny
Comfortable at 18°C 65°F, overcast in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds switching from the ESE to the N at 16 km/h 10 mph. Gusts up to 32 km/h 20 mph.

Monday, September 21, 2026

Mid-Morning
Arnprior Weather - 2026-09-21 - Morning - Overcast
7°C 44°F
Overcast
Mid-Afternoon
Arnprior Weather - 2026-09-21 - Afternoon - Overcast
13°C 56°F
Overcast
Early-Evening
Arnprior Weather - 2026-09-21 - Evening - Overcast
11°C 51°F
Overcast
Crisp with a high near 13°C 56°F, overcast throughout the day, with steady humidity and steady pressure. Winds moving from the N to the NNE at 9 km/h 6 mph.

Tuesday, September 22, 2026

Mid-Morning
Arnprior Weather - 2026-09-22 - Morning - Overcast
7°C 45°F
Overcast
Mid-Afternoon
Arnprior Weather - 2026-09-22 - Afternoon - Overcast
15°C 59°F
Overcast
Early-Evening
Arnprior Weather - 2026-09-22 - Evening - Overcast
11°C 52°F
Overcast
Refreshing around 15°C 59°F, overcast throughout the day, with steady humidity and steady pressure. Winds out of the E at 14 km/h 9 mph.

Wednesday, September 23, 2026

Mid-Morning
Arnprior Weather - 2026-09-23 - Morning - Sunny
8°C 46°F
Sunny
Mid-Afternoon
Arnprior Weather - 2026-09-23 - Afternoon - Cloudy
17°C 62°F
Cloudy
Early-Evening
Arnprior Weather - 2026-09-23 - Evening - Sunny
13°C 56°F
Sunny
Mildly cool near 17°C 62°F, sunny in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds blowing from the E at 17 km/h 10 mph.

Thursday, September 24, 2026

Mid-Morning
Arnprior Weather - 2026-09-24 - Morning - Sunny
10°C 50°F
Sunny
Mid-Afternoon
Arnprior Weather - 2026-09-24 - Afternoon - Overcast
18°C 65°F
Overcast
Early-Evening
Arnprior Weather - 2026-09-24 - Evening - Cloudy
14°C 57°F
Cloudy
Comfortable at 18°C 65°F, cloudy in the morning, partly cloudy in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling.

Friday, September 25, 2026

Mid-Morning
Arnprior Weather - 2026-09-25 - Morning - Scattered Showers
9°C 48°F
Scattered Showers
Mid-Afternoon
Arnprior Weather - 2026-09-25 - Afternoon - Scattered Showers
8°C 46°F
Scattered Showers
Early-Evening
Arnprior Weather - 2026-09-25 - Evening - Scattered Showers
7°C 45°F
Scattered Showers
Crisp with a high near 8°C 46°F, scattered downpours possible, with steady humidity and barometric pressure falling. Winds WNW at 25 km/h 16 mph. Gusts up to 47 km/h 29 mph.

Saturday, September 26, 2026

Mid-Morning
Arnprior Weather - 2026-09-26 - Morning - Sunny
12°C 53°F
Sunny
Mid-Afternoon
Arnprior Weather - 2026-09-26 - Afternoon - Sunny
20°C 68°F
Sunny
Early-Evening
Arnprior Weather - 2026-09-26 - Evening - Overcast
12°C 52°F
Overcast
Mild temperatures up to 20°C 68°F, sunny through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling.

Sunday, September 27, 2026

Mid-Morning
Arnprior Weather - 2026-09-27 - Morning - Sunny
7°C 45°F
Sunny
Mid-Afternoon
Arnprior Weather - 2026-09-27 - Afternoon - Sunny
19°C 67°F
Sunny
Early-Evening
Arnprior Weather - 2026-09-27 - Evening - Sunny
16°C 61°F
Sunny
Mildly cool near 19°C 67°F, cloudy through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds switching from the WNW to the SW at 12 km/h 7 mph.

Monday, September 28, 2026

Mid-Morning
Arnprior Weather - 2026-09-28 - Morning - Overcast
12°C 54°F
Overcast
Mid-Afternoon
Arnprior Weather - 2026-09-28 - Afternoon - Sunny
23°C 74°F
Sunny
Early-Evening
Arnprior Weather - 2026-09-28 - Evening - Overcast
20°C 68°F
Overcast
Pleasant near 23°C 74°F, overcast in the morning, sunny in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds blowing from the WSW at 21 km/h 13 mph. Gusts up to 35 km/h 21 mph.

Tuesday, September 29, 2026

Mid-Morning
Arnprior Weather - 2026-09-29 - Morning - Cloudy
17°C 63°F
Cloudy
Mid-Afternoon
Arnprior Weather - 2026-09-29 - Afternoon - Light Showers
22°C 72°F
Light Showers
Early-Evening
Arnprior Weather - 2026-09-29 - Evening - Light Showers
20°C 68°F
Light Showers
Comfortable with temperatures reaching 22°C 72°F, dry early, with showers continuing through afternoon and evening, with increasing humidity and steady pressure.

Wednesday, September 30, 2026

Mid-Morning
Arnprior Weather - 2026-09-30 - Morning - Overcast
18°C 65°F
Overcast
Mid-Afternoon
Arnprior Weather - 2026-09-30 - Afternoon - Overcast
27°C 81°F
Overcast
Early-Evening
Arnprior Weather - 2026-09-30 - Evening - Light Showers
23°C 74°F
Light Showers
Quite warm around 27°C 81°F, drier conditions through late afternoon before showers move in, with lower humidity and barometric pressure falling. Winds swinging from the WSW to the SW at 12 km/h 8 mph.

Thursday, October 1, 2026

Mid-Morning
Arnprior Weather - 2026-10-01 - Morning - Light Showers
17°C 63°F
Light Showers
Mid-Afternoon
Arnprior Weather - 2026-10-01 - Afternoon - Light Showers
18°C 65°F
Light Showers
Early-Evening
Arnprior Weather - 2026-10-01 - Evening - Heavy Rain Showers
14°C 58°F
Heavy Rain Showers
Mildly cool near 18°C 65°F, persistent showers off and on through the day, with steady humidity and steady pressure. Winds shifting from the SSW to the WNW at 12 km/h 8 mph.

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Weather by the Numbers

Fri, 18th
Arnprior ON Weather - Friday, Sep 18, 2026 - Sunny
Hi: 18°C 64°F
Lo: 9°C 48°F
Sunrise 06:47 AM
Sunset 07:10 PM
Wind NNW 18 km/h11 mph
Dew Point 2°C35°F
uv Index 4
Barometric Pressure 102.3 kPa30.21 in
POP 1% *
Humidity 37%
Sat, 19th
Arnprior ON Weather - Saturday, Sep 19, 2026 - Overcast
Hi: 16°C 60°F
Lo: 4°C 40°F
Sunrise 06:48 AM
Sunset 07:08 PM
Wind E 5 km/h3 mph
Dew Point 2°C35°F
uv Index 4
Barometric Pressure 102.5 kPa30.27 in
POP 10% *
Humidity 45%
Sun, 20th
Arnprior ON Weather - Sunday, Sep 20, 2026 - Partly Cloudy
Hi: 19°C 66°F
Lo: 8°C 47°F
Sunrise 06:49 AM
Sunset 07:06 PM
Wind N 1 km/h1 mph
Dew Point 5°C41°F
uv Index 4
Barometric Pressure 101.7 kPa30.03 in
POP 4% *
Humidity 51%
Mon, 21st
Arnprior ON Weather - Monday, Sep 21, 2026 - Overcast
Hi: 13°C 56°F
Lo: 4°C 39°F
Sunrise 06:51 AM
Sunset 07:04 PM
Wind NNE 14 km/h9 mph
Dew Point -1°C31°F
uv Index 4
Barometric Pressure 102.7 kPa30.33 in
POP 11% *
Humidity 44%
Tue, 22nd
Arnprior ON Weather - Tuesday, Sep 22, 2026 - Overcast
Hi: 15°C 59°F
Lo: 5°C 41°F
Sunrise 06:52 AM
Sunset 07:02 PM
Wind ENE 15 km/h9 mph
Dew Point 0°C33°F
uv Index 3
Barometric Pressure 103.2 kPa30.47 in
POP 10% *
Humidity 43%
Wed, 23rd
Arnprior ON Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 17°C 63°F
Lo: 5°C 40°F
Sunrise 06:53 AM
Sunset 07:00 PM
Wind ESE 16 km/h10 mph
Dew Point 3°C38°F
uv Index 4
Barometric Pressure 103.4 kPa30.53 in
POP 2% *
Humidity 48%
Thu, 24th
Arnprior ON Weather - Thursday, Sep 24, 2026 - Sunny
Hi: 18°C 65°F
Lo: 8°C 46°F
Sunrise 06:54 AM
Sunset 06:58 PM
Wind ENE 9 km/h6 mph
Dew Point 5°C40°F
uv Index 5
Barometric Pressure 102.7 kPa30.33 in
POP 2% *
Humidity 48%
Fri, 25th
Arnprior ON Weather - Friday, Sep 25, 2026 - Patchy Rain Nearby
Hi: 10°C 50°F
Lo: 6°C 43°F
Sunrise 06:56 AM
Sunset 06:56 PM
Wind WNW 26 km/h16 mph
Dew Point 7°C45°F
uv Index 2
Barometric Pressure 101.2 kPa29.88 in
POP 37% *
Humidity 86%
Sat, 26th
Arnprior ON Weather - Saturday, Sep 26, 2026 - Sunny
Hi: 20°C 68°F
Lo: 5°C 42°F
Sunrise 06:57 AM
Sunset 06:54 PM
Wind ESE 5 km/h3 mph
Dew Point 6°C44°F
uv Index 5
Barometric Pressure 102.7 kPa30.33 in
POP 2% *
Humidity 48%
Sun, 27th
Arnprior ON Weather - Sunday, Sep 27, 2026 - Overcast
Hi: 20°C 69°F
Lo: 4°C 39°F
Sunrise 06:58 AM
Sunset 06:52 PM
Wind WSW 10 km/h6 mph
Dew Point 0°C33°F
uv Index 3
Barometric Pressure 101.8 kPa30.06 in
POP 3% *
Humidity 39%
Mon, 28th
Arnprior ON Weather - Monday, Sep 28, 2026 - Sunny
Hi: 24°C 76°F
Lo: 9°C 49°F
Sunrise 06:59 AM
Sunset 06:51 PM
Wind SW 16 km/h10 mph
Dew Point 7°C45°F
uv Index 5
Barometric Pressure 101.3 kPa29.91 in
POP 7% *
Humidity 51%
Tue, 29th
Arnprior ON Weather - Tuesday, Sep 29, 2026 - Overcast
Hi: 23°C 74°F
Lo: 16°C 60°F
Sunrise 07:01 AM
Sunset 06:49 PM
Wind WSW 7 km/h4 mph
Dew Point 14°C57°F
uv Index 5
Barometric Pressure 101.3 kPa29.91 in
POP 11% *
Humidity 62%
Wed, 30th
Arnprior ON Weather - Wednesday, Sep 30, 2026 - Overcast
Hi: 27°C 81°F
Lo: 17°C 62°F
Sunrise 07:02 AM
Sunset 06:47 PM
Wind S 9 km/h6 mph
Dew Point 15°C59°F
uv Index 5
Barometric Pressure 101.2 kPa29.88 in
POP 14% *
Humidity 62%
Thu, 1st
Arnprior ON Weather - Thursday, Oct 1, 2026 - Patchy Rain Nearby
Hi: 20°C 68°F
Lo: 12°C 54°F
Sunrise 07:03 AM
Sunset 06:45 PM
Wind WSW 8 km/h5 mph
Dew Point 16°C61°F
uv Index 4
Barometric Pressure 100.7 kPa29.74 in
POP 45% *
Humidity 82%
* POP = Probability of Precipitation. Data for 12:00 PM.