Sylvania, United States experiences average highs of 16°C (61°F) and lows of 7°C (45°F) throughout the year. Rainfall is moderate, averaging about 11 rainy days per month. Average highs have stayed broadly stable across the available records.
Sylvania, United States Weather & Climate 2026
Monthly climate averages for Sylvania, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Mar–Oct At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5.2/10
Best: June, July, August, September
UV Index
5
Low
Temperature 16°C / 7°C
Feels Like 14°C / 5°C
Rainy Days 11
Rainfall 78 mm
Sunshine 8 h
Humidity 71%
Wind Speed 21 km/h
Dew Point 6°C
Snow Days 6 days
Frost Days 17 days
Hottest Month
28°C
July
Avg Low20°C
Rain12days
Coldest Month
-5°C
January
Avg High1°C
Rain10days
Driest Month
8days
September
Avg High25°C
Avg Low16°C
Windiest Month
24 km/h
March (Gusts 46)
Worst Time to Visit
Consider avoiding January, February, March, December due to very cold temperatures.
Sun Position
Sunrise 06:01
Daylight 15.2h
Sunset 21:12
Live conditions—
Sylvania on the map · live conditions
Sylvania, United States
- Continent
- Americas
- Country
- United States
- City
- Sylvania
- Population
- 19K
- Elevation
- 202 m
- Coordinates
- 41.72°, -83.71°
Seasonal Breakdown
Spring
Mar–May
Avg High 15°C
Avg Low 5°C
Rain 12 days/mo
Summer
Jun–Aug
Avg High 27°C
Avg Low 18°C
Rain 11 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 17°C
Avg Low 9°C
Rain 9 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 3°C
Avg Low -4°C
Rain 9 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: 1°C / -5°C . Feb: 4°C / -5°C . Mar: 10°C / 0°C . Apr: 15°C / 5°C . May: 21°C / 11°C . Jun: 26°C / 17°C . Jul: 28°C / 20°C . Aug: 27°C / 19°C . Sep: 25°C / 16°C . Oct: 18°C / 10°C . Nov: 10°C / 2°C . Dec: 4°C / -2°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 66 mm. Feb: 64 mm. Mar: 82 mm. Apr: 90 mm. May: 107 mm. Jun: 87 mm. Jul: 100 mm. Aug: 79 mm. Sep: 55 mm. Oct: 76 mm. Nov: 64 mm. Dec: 61 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 73%. Feb: 73%. Mar: 67%. Apr: 68%. May: 71%. Jun: 68%. Jul: 72%. Aug: 72%. Sep: 72%. Oct: 70%. Nov: 71%. Dec: 75%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 22 km/h . Feb: 24 km/h . Mar: 24 km/h . Apr: 23 km/h . May: 20 km/h . Jun: 20 km/h . Jul: 16 km/h . Aug: 16 km/h . Sep: 18 km/h . Oct: 21 km/h . Nov: 22 km/h . Dec: 22 km/h .
Sunshine
Sunshine
Sunshine: Jan: 5h. Feb: 7h. Mar: 8h. Apr: 9h. May: 10h. Jun: 12h. Jul: 12h. Aug: 11h. Sep: 9h. Oct: 7h. Nov: 6h. Dec: 4h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 4. Apr: UV 6. May: UV 6. Jun: UV 7. Jul: UV 7. Aug: UV 6. Sep: UV 5. Oct: UV 4. Nov: UV 2. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 9 days. Feb: 9 days. Mar: 5 days. Apr: 3 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 4 days. Dec: 7 days.
Climate Trends
Average highs have stayed broadly stable 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 · 29°C | Jul · 28°C |
| Coldest month | Jan 2025 · -7°C | Jan · -5°C |
| Wettest month | May 2025 · 118 mm | May · 107 mm |
| Windiest month | Mar 2025 · 26 km/h | Mar · 24 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Fair May
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 1°C / -5°C | -3°C / -10°C | 10days (66 mm) Wet | 4.6h Fair | 73% Muggy | 2 Low | Poor | View Details |
| February | 4°C / -5°C | -1°C / -10°C | 9days (64 mm) Wet | 6.5h Fair | 73% Muggy | 3.3 Moderate | Poor | View Details |
| March | 10°C / 0°C | 6°C / -4°C | 11days (82 mm) Wet | 7.5h Good | 67% Muggy | 4.3 Moderate | Poor | View Details |
| April | 15°C / 5°C | 12°C / 1°C | 13days (90 mm) Wet | 8.8h Good | 68% Muggy | 5.6 High | Fair | View Details |
| May | 21°C / 11°C | 20°C / 9°C | 13days (107 mm) Wet | 9.8h Good | 71% Muggy | 6.3 High | Good | View Details |
| June best | 26°C / 17°C | 27°C / 17°C | 12days (87 mm) Wet | 11.6h Excellent | 68% Muggy | 6.8 High | Excellent | View Details |
| July best | 28°C / 20°C | 31°C / 21°C | 12days (100 mm) Wet | 11.6h Excellent | 72% Muggy | 7 High | Excellent | View Details |
| August best | 27°C / 19°C | 29°C / 20°C | 10days (79 mm) Wet | 11.1h Excellent | 72% Muggy | 6.3 High | Excellent | View Details |
| September best | 25°C / 16°C | 25°C / 16°C | 8days (55 mm) Wet | 9.3h Good | 72% Muggy | 5.3 High | Excellent | View Details |
| October | 18°C / 10°C | 16°C / 7°C | 11days (76 mm) Wet | 7.3h Good | 70% Muggy | 3.7 Moderate | Good | View Details |
| November | 10°C / 2°C | 6°C / -2°C | 8days (64 mm) Wet | 5.8h Fair | 71% Muggy | 2.4 Moderate | Poor | View Details |
| December | 4°C / -2°C | 0°C / -7°C | 9days (61 mm) Wet | 4.3h Fair | 75% Muggy | 1.7 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Sylvania are June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Sylvania, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Sylvania is July, with average daytime highs of 28°C (83°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Sylvania is January, with average overnight lows of -5°C (23°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Sylvania is May, averaging 107mm of precipitation across 13 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Sylvania runs through April, May, June, July, with the heaviest rainfall in April. Based on 10-year averages for Sylvania.
Sylvania receives approximately 98 sunshine hours per year. The sunniest month is June with around 12 hours. Based on climate data for Sylvania.
The least favorable months to visit Sylvania are January, February, March, December, primarily due to very cold temperatures. For the best conditions, consider June, July, August, September instead.
The annual average UV index in Sylvania is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Sylvania is 71%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Sylvania receives snow. Months with snowfall average 6 snow days and 10 cm (4 in) of accumulation, with about 17 frost days during winter.
Average wind speeds in Sylvania are 21 km/h (13 mph). The windiest month is March with peak winds reaching 24 km/h (15 mph) (gusts up to 46 km/h / 28 mph).
Sylvania averages 4 clear-sky days per month with overall cloud cover around 62%. The clearest skies occur in September.
The annual average dew point in Sylvania is 6°C (43°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Sylvania has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Sylvania ranges from 5°C (41°F) to 14°C (57°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Sylvania. It earns a climate score of 8.6/10 with Excellent.
For June in Sylvania, pack Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. With average highs of 26°C (80°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.
Last updated: