Weirton, United States experiences average highs of 17°C (63°F) and lows of 8°C (46°F) throughout the year. Rainfall is moderate, averaging about 12 rainy days per month. Average highs have cooled by 0.9°C (1.6°F) across the available records.
Weirton, United States Weather & Climate 2026
Monthly climate averages for Weirton, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Apr–Jul At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5.3/10
Best: May, June, July, August, September
UV Index
5
Low
Temperature 17°C / 8°C
Feels Like 16°C / 7°C
Rainy Days 12
Rainfall 102 mm
Sunshine 8 h
Humidity 72%
Wind Speed 15 km/h
Dew Point 8°C
Snow Days 6 days
Frost Days 14 days
Hottest Month
29°C
July
Avg Low20°C
Rain14days
Coldest Month
-4°C
January
Avg High4°C
Rain11days
Driest Month
10days
November
Avg High11°C
Avg Low3°C
Windiest Month
19 km/h
March (Gusts 45)
Worst Time to Visit
Consider avoiding January, February, December due to very cold temperatures, frequent rain.
Sun Position
Sunrise 05:53
Daylight 15h
Sunset 20:55
Live conditions—
Weirton on the map · live conditions
Weirton, United States
- Continent
- Americas
- Country
- United States
- City
- Weirton
- Population
- 19.2K
- Elevation
- 230 m
- Coordinates
- 40.42°, -80.59°
Seasonal Breakdown
Spring
Mar–May
Avg High 17°C
Avg Low 7°C
Rain 14 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 28°C
Avg Low 19°C
Rain 13 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 18°C
Avg Low 10°C
Rain 11 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 6°C
Avg Low -2°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: 4°C / -4°C . Feb: 7°C / -2°C . Mar: 12°C / 2°C . Apr: 17°C / 7°C . May: 22°C / 12°C . Jun: 26°C / 17°C . Jul: 29°C / 20°C . Aug: 28°C / 19°C . Sep: 25°C / 16°C . Oct: 19°C / 10°C . Nov: 11°C / 3°C . Dec: 6°C / -1°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 92 mm. Feb: 103 mm. Mar: 102 mm. Apr: 114 mm. May: 129 mm. Jun: 115 mm. Jul: 110 mm. Aug: 90 mm. Sep: 102 mm. Oct: 100 mm. Nov: 76 mm. Dec: 87 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 72%. Feb: 69%. Mar: 66%. Apr: 68%. May: 76%. Jun: 75%. Jul: 75%. Aug: 76%. Sep: 74%. Oct: 73%. Nov: 71%. Dec: 74%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 17 km/h . Feb: 18 km/h . Mar: 19 km/h . Apr: 18 km/h . May: 15 km/h . Jun: 14 km/h . Jul: 12 km/h . Aug: 12 km/h . Sep: 13 km/h . Oct: 15 km/h . Nov: 17 km/h . Dec: 17 km/h .
Sunshine
Sunshine
Sunshine: Jan: 5h. Feb: 6h. Mar: 8h. Apr: 9h. May: 10h. Jun: 11h. Jul: 11h. Aug: 11h. Sep: 9h. Oct: 7h. Nov: 6h. Dec: 5h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 5. Apr: UV 5. May: UV 6. Jun: UV 7. Jul: UV 7. Aug: UV 7. Sep: UV 5. Oct: UV 4. Nov: UV 3. 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: 11 days. Feb: 8 days. Mar: 5 days. Apr: 2 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 3 days. Dec: 7 days.
Climate Trends
Average highs have cooled by 0.9°C (1.6°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 · 29°C | Jul · 29°C |
| Coldest month | Jan 2025 · -8°C | Jan · -4°C |
| Wettest month | May 2025 · 195 mm | May · 129 mm |
| Windiest month | Mar 2025 · 19 km/h | Mar · 19 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Fair May best
Good June best
Excellent July best
Good August best
Excellent September best
Excellent October
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 4°C / -4°C | 0°C / -8°C | 11days (92 mm) Wet | 4.7h Fair | 72% Muggy | 2 Low | Poor | View Details |
| February | 7°C / -2°C | 3°C / -6°C | 11days (103 mm) Wet | 5.9h Fair | 69% Muggy | 3.1 Moderate | Poor | View Details |
| March | 12°C / 2°C | 9°C / -2°C | 12days (102 mm) Wet | 7.5h Good | 66% Muggy | 4.5 Moderate | Poor | View Details |
| April | 17°C / 7°C | 15°C / 4°C | 13days (114 mm) Wet | 8.9h Good | 68% Muggy | 5.4 High | Fair | View Details |
| May best | 22°C / 12°C | 22°C / 11°C | 16days (129 mm) Wet | 9.9h Good | 76% Humid | 6.3 High | Good | View Details |
| June best | 26°C / 17°C | 28°C / 18°C | 14days (115 mm) Wet | 11.1h Excellent | 75% Muggy | 7 High | Excellent | View Details |
| July best | 29°C / 20°C | 32°C / 22°C | 14days (110 mm) Wet | 11.2h Excellent | 75% Muggy | 7.1 Very High | Good | View Details |
| August best | 28°C / 19°C | 30°C / 21°C | 12days (90 mm) Wet | 10.8h Excellent | 76% Humid | 6.6 High | Excellent | View Details |
| September best | 25°C / 16°C | 26°C / 16°C | 11days (102 mm) Wet | 9.3h Good | 74% Muggy | 5.3 High | Excellent | View Details |
| October | 19°C / 10°C | 18°C / 8°C | 11days (100 mm) Wet | 7.4h Good | 73% Muggy | 3.9 Moderate | Good | View Details |
| November | 11°C / 3°C | 8°C / 0°C | 10days (76 mm) Wet | 6h Fair | 71% Muggy | 2.6 Moderate | Poor | View Details |
| December | 6°C / -1°C | 3°C / -5°C | 12days (87 mm) Wet | 4.5h Fair | 74% Muggy | 1.9 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Weirton 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 Weirton, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Weirton is July, with average daytime highs of 29°C (84°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Weirton is January, with average overnight lows of -4°C (25°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Weirton is May, averaging 129mm of precipitation across 16 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Weirton runs through May, June, July, April, with the heaviest rainfall in May. Based on 10-year averages for Weirton.
Weirton receives approximately 97 sunshine hours per year. The sunniest month is July with around 11 hours. Based on climate data for Weirton.
The least favorable months to visit Weirton are January, February, 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 Weirton is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Weirton is 72%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Weirton receives snow. Months with snowfall average 6 snow days and 9 cm (4 in) of accumulation, with about 14 frost days during winter.
Average wind speeds in Weirton are 15 km/h (9 mph). The windiest month is March with peak winds reaching 19 km/h (12 mph) (gusts up to 45 km/h / 28 mph).
Weirton averages 3 clear-sky days per month with overall cloud cover around 65%. The clearest skies occur in October.
The annual average dew point in Weirton is 8°C (46°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Weirton 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 Weirton ranges from 7°C (45°F) to 16°C (61°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 Weirton. It earns a climate score of 8.3/10 with Excellent.
For June in Weirton, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 26°C (80°F) and 14 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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