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St. Marys, OH

86°F
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St. Marys

Ohio

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St. Marys, OH Weather
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9 PM

86°
RealFeel® 93°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
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rain drop 19%
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Sunny
alerts

Extreme Heat Warning

12:43 AM Tuesday - 8:00 PM Friday

RealFeel Shade™93°

Heat Index95°

WindSW 7 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts10 mph

Humidity67%

Indoor Humidity67% (Extremely Humid)

Dew Point74° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover6%

Visibility10 mi

Cloud Ceiling33400 ft

10 PM

84°
RealFeel® 91°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 24%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

12:43 AM Tuesday - 8:00 PM Friday

Heat Index91°

WindSW 6 mph

Air QualityFair

Wind Gusts8 mph

Humidity74%

Indoor Humidity74% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

81°
RealFeel® 89°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
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rain drop 43%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

12:43 AM Tuesday - 8:00 PM Friday

Heat Index87°

WindSW 6 mph

Air QualityFair

Wind Gusts8 mph

Humidity80%

Indoor Humidity80% (Extremely Humid)

Dew Point75° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for St. Marys

AccuWeather's hourly forecast for St. Marys provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 86° with a RealFeel® of 93°, sunny with a 19% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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Weather Near St. Marys:

  • Dayton, OH
  • Kettering, OH
  • Springfield, OH
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