Chelmsford

Greater Sudbury, Sudbury District, Ontario, Canada

Current Weather

7°44°

Clear

Feels Like: 5°40°

Min: 0°31°

Max: 12°54°

The next few hours will be overcast, with today reaching 7°C and dropping to -5°C. The coming days will be mostly cloudy throughout the day.

Hourly Forecast

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Air Quality

26
Good

Air quality is satisfactory, and air pollution poses little or no risk.

GoodHazardous

Daylight Hours

08:07

Sunrise

18:09

Sunset

10 hours 2 minutes of sunlight today

Moon

18:09

Moonrise

08:43

Moonset

Daily Forecast

Today

0°31°
12°54°

Tuesday

-5°23°
6°43°

Wednesday

0°32°
14°56°

Thursday

8°47°
15°59°

Friday

3°38°
12°54°

Saturday

2°35°
11°52°

Sunday

5°41°
13°56°

Sunday

6°43°
13°55°

Monday

4°40°
13°55°

Tuesday

4°39°
13°56°

UV Index

Wear sunscreen
3Moderate
LowExtreme

Humidity

44%Dry
LowHigh

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Weather in Chelmsford today, October 26, 2026

Chelmsford looks cloudy on October 26, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward.Chelmsford looks cloudy on October 26, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward.

Expect highs of 12°C and cooler readings close to 0°C. Relative humidity sits between 41% and 75%, reaching its peak around 23:00. Airflow remains manageable, reaching about 17 km/h around 15:00.Expect highs of 54°F and cooler readings close to 31°F. Relative humidity sits between 41% and 75%, reaching its peak around 23:00. Airflow remains manageable, reaching about 10 mph around 15:00.

Afternoon skies stay clogged, peaking close to 100% near 21:00. The grey theme continues rather than clearing out. Visibility stays near 16.1 km. Sunrise is at 08:07 and sunset at 18:09, giving 10 hours 2 minutes of sunlight today.Afternoon skies stay clogged, peaking close to 100% near 21:00. The grey theme continues rather than clearing out. Visibility stays near 10 mi. Sunrise is at 08:07 and sunset at 18:09, giving 10 hours 2 minutes of sunlight today.

Taken together, overcast skies in Chelmsford on October 26, 2026 favour indoor or covered options, with temperatures near 12°C.Taken together, overcast skies in Chelmsford on October 26, 2026 favour indoor or covered options, with temperatures near 54°F.

Frequently asked questions about weather in Chelmsford

How warm does it get in Chelmsford?

The warmest month in Chelmsford is July, with average high temperatures of 26°C. The average temperature during this period is around 20°C.The warmest month in Chelmsford is July, with average high temperatures of 78°F. The average temperature during this period is around 67°F.

How cold does it get in Chelmsford?

The coldest month in Chelmsford is January, with average low temperatures of -15°C. The average temperature during this period is around -11°C.The coldest month in Chelmsford is January, with average low temperatures of 5°F. The average temperature during this period is around 13°F.

What is the wettest time of year in Chelmsford?

The wettest month in Chelmsford is October, with an average of 112 mm of precipitation.The wettest month in Chelmsford is October, with an average of 4.4 in of precipitation.

What is the driest time of year in Chelmsford?

The driest month in Chelmsford is January, with an average of 53 mm of precipitation.The driest month in Chelmsford is January, with an average of 2.1 in of precipitation.

View full climate insights for Chelmsford →