Deep River, Canada experiences average highs of 11°C (52°F) and lows of 2°C (36°F) throughout the year. Rainfall is moderate, averaging about 12 rainy days per month. Average highs have cooled by 0.6°C (1.1°F) across the available records.
Deep River, Canada Weather & Climate 2026
Monthly climate averages for Deep River, Canada. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Apr At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4.4/10
Best: May, June, July, August, September
UV Index
4
Low
Temperature 11°C / 2°C
Feels Like 9°C / -1°C
Rainy Days 12
Rainfall 84 mm
Sunshine 8 h
Humidity 75%
Wind Speed 16 km/h
Dew Point 2°C
Snow Days 10 days
Frost Days 19 days
Hottest Month
26°C
July
Avg Low17°C
Rain12days
Coldest Month
-13°C
January
Avg High-5°C
Rain10days
Driest Month
9days
September
Avg High21°C
Avg Low12°C
Windiest Month
17 km/h
March (Gusts 40)
Worst Time to Visit
Consider avoiding January, February, November, December due to very cold temperatures, frequent rain.
Sun Position
Sunrise 05:20
Daylight 15.7h
Sunset 21:04
Live conditions—
Deep River on the map · live conditions
Deep River, Canada
- Continent
- Americas
- Country
- Canada
- City
- Deep River
- Population
- 4.3K
- Coordinates
- 46.10°, -77.50°
Seasonal Breakdown
Spring
Mar–May
Avg High 10°C
Avg Low 0°C
Rain 12 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 25°C
Avg Low 15°C
Rain 12 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 13°C
Avg Low 6°C
Rain 11 days/mo
1/3 best months
Winter
Dec–Feb
Avg High -3°C
Avg Low -11°C
Rain 11 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: -5°C / -13°C . Feb: -3°C / -12°C . Mar: 2°C / -7°C . Apr: 9°C / -1°C . May: 18°C / 7°C . Jun: 24°C / 13°C . Jul: 26°C / 17°C . Aug: 25°C / 16°C . Sep: 21°C / 12°C . Oct: 13°C / 6°C . Nov: 4°C / -1°C . Dec: -2°C / -9°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 60 mm. Feb: 66 mm. Mar: 78 mm. Apr: 102 mm. May: 87 mm. Jun: 106 mm. Jul: 96 mm. Aug: 104 mm. Sep: 82 mm. Oct: 91 mm. Nov: 69 mm. Dec: 72 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 78%. Feb: 76%. Mar: 73%. Apr: 70%. May: 68%. Jun: 70%. Jul: 72%. Aug: 75%. Sep: 78%. Oct: 78%. Nov: 78%. Dec: 80%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 16 km/h . Feb: 17 km/h . Mar: 17 km/h . Apr: 17 km/h . May: 15 km/h . Jun: 15 km/h . Jul: 14 km/h . Aug: 14 km/h . Sep: 14 km/h . Oct: 16 km/h . Nov: 17 km/h . Dec: 16 km/h .
Sunshine
Sunshine
Sunshine: Jan: 5h. Feb: 6h. Mar: 7h. Apr: 8h. May: 10h. Jun: 11h. Jul: 12h. Aug: 10h. Sep: 9h. Oct: 6h. Nov: 4h. Dec: 4h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 4. Apr: UV 4. May: UV 6. Jun: UV 6. Jul: UV 6. Aug: UV 6. Sep: UV 5. Oct: UV 3. Nov: UV 2. Dec: UV 1.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 18 days. Feb: 16 days. Mar: 12 days. Apr: 7 days. May: 1 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 1 days. Nov: 11 days. Dec: 17 days.
Climate Trends
Average highs have cooled by 0.6°C (1.1°F) across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 27°C | Jul · 26°C |
| Coldest month | Feb 2025 · -14°C | Jan · -13°C |
| Wettest month | Mar 2025 · 115 mm | Jun · 106 mm |
| Windiest month | Dec 2025 · 19 km/h | Mar · 17 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Poor May best
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Fair November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | -5°C / -13°C | -9°C / -18°C | 10days (60 mm) Wet | 4.5h Fair | 78% Humid | 1.7 Low | Poor | View Details |
| February | -3°C / -12°C | -8°C / -17°C | 12days (66 mm) Wet | 6h Fair | 76% Humid | 2.5 Moderate | Poor | View Details |
| March | 2°C / -7°C | -2°C / -12°C | 12days (78 mm) Wet | 7.3h Good | 73% Muggy | 3.6 Moderate | Poor | View Details |
| April | 9°C / -1°C | 6°C / -5°C | 13days (102 mm) Wet | 8.2h Good | 70% Muggy | 4.3 Moderate | Poor | View Details |
| May best | 18°C / 7°C | 17°C / 5°C | 12days (87 mm) Wet | 10h Excellent | 68% Muggy | 5.7 High | Good | View Details |
| June best | 24°C / 13°C | 24°C / 12°C | 12days (106 mm) Wet | 10.7h Excellent | 70% Muggy | 6.1 High | Excellent | View Details |
| July best | 26°C / 17°C | 28°C / 17°C | 12days (96 mm) Wet | 11.8h Excellent | 72% Muggy | 6.4 High | Excellent | View Details |
| August best | 25°C / 16°C | 26°C / 16°C | 12days (104 mm) Wet | 10.3h Excellent | 75% Muggy | 5.6 High | Excellent | View Details |
| September best | 21°C / 12°C | 20°C / 11°C | 9days (82 mm) Wet | 8.6h Good | 78% Humid | 4.5 Moderate | Excellent | View Details |
| October | 13°C / 6°C | 11°C / 4°C | 12days (91 mm) Wet | 6.1h Fair | 78% Humid | 2.9 Moderate | Fair | View Details |
| November | 4°C / -1°C | 1°C / -6°C | 12days (69 mm) Wet | 4.3h Fair | 78% Humid | 1.7 Low | Poor | View Details |
| December | -2°C / -9°C | -6°C / -14°C | 11days (72 mm) Wet | 3.7h Poor | 80% Humid | 1.4 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Deep River are May, June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Deep River, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Deep River is July, with average daytime highs of 26°C (79°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Deep River is January, with average overnight lows of -13°C (9°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Deep River is June, averaging 106mm of precipitation across 12 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Deep River runs through April, February, March, May, with the heaviest rainfall in April. Based on 10-year averages for Deep River.
Deep River receives approximately 91 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Deep River.
The least favorable months to visit Deep River are January, February, November, December, primarily due to very cold temperatures, frequent rain. For the best conditions, consider May, June, July, August, September instead.
The annual average UV index in Deep River is 4, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Deep River is 75%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Deep River receives snow. Months with snowfall average 10 snow days and 21 cm (8 in) of accumulation, with about 19 frost days during winter.
Average wind speeds in Deep River are 16 km/h (10 mph). The windiest month is March with peak winds reaching 17 km/h (11 mph) (gusts up to 40 km/h / 25 mph).
Deep River averages 3 clear-sky days per month with overall cloud cover around 67%. The clearest skies occur in September.
The annual average dew point in Deep River is 2°C (36°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Deep River has a Warm-Summer Continental climate, classified as Dfb under the Köppen system. Continental climates experience extreme temperature ranges — hot summers and cold, snowy winters.
The 'feels like' temperature in Deep River ranges from -1°C (30°F) to 9°C (48°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
Yes, June is a great time to visit Deep River. It earns a climate score of 7.7/10 with Excellent.
For June in Deep River, pack Umbrella, Waterproof jacket, Sunscreen (SPF 30+), Sunglasses, Comfortable walking shoes. With average highs of 24°C (74°F) and 12 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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