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St. Thomas, Ontario

73°F
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St. Thomas

Ontario

73°
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St. Thomas, Ontario Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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10 AM

74°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 33%
Chevron down
Mostly cloudy

RealFeel Shade™76°

WindSW 8 mph

Air QualityFair

Max UV Index2.5 (Moderate)

Wind Gusts21 mph

Humidity86%

Indoor Humidity86% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover86%

Visibility10 mi

Cloud Ceiling19000 ft

11 AM

75°
RealFeel® 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 32%
Chevron down
Cloudy

RealFeel Shade™77°

WindSW 10 mph

Air QualityFair

Max UV Index3.2 (Moderate)

Wind Gusts22 mph

Humidity83%

Indoor Humidity83% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover93%

Visibility10 mi

Cloud Ceiling19000 ft

12 PM

78°
RealFeel® 85°
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.
LEARN MORE
rain drop 32%
Chevron down
Cloudy

RealFeel Shade™79°

WindSW 12 mph

Air QualityFair

Max UV Index5.4 (Moderate)

Wind Gusts21 mph

Humidity77%

Indoor Humidity77% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover91%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

81°
RealFeel® 88°
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.
LEARN MORE
rain drop 21%
Chevron down
Cloudy

RealFeel Shade™82°

Heat Index84°

WindSW 12 mph

Air QualityFair

Max UV Index6.1 (High)

Wind Gusts21 mph

Humidity71%

Indoor Humidity71% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

82°
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.
LEARN MORE
rain drop 0%
Chevron down
Mostly cloudy

RealFeel Shade™84°

Heat Index87°

WindSW 12 mph

Air QualityFair

Max UV Index5.8 (High)

Wind Gusts20 mph

Humidity67%

Indoor Humidity67% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover88%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

83°
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 0%
Chevron down
Intermittent clouds

RealFeel Shade™85°

Heat Index88°

WindSW 12 mph

Air QualityFair

Max UV Index6.8 (High)

Wind Gusts20 mph

Humidity65%

Indoor Humidity65% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover63%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

85°
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 0%
Chevron down
Partly sunny

RealFeel Shade™86°

Heat Index89°

WindSW 10 mph

Air QualityFair

Max UV Index4.8 (Moderate)

Wind Gusts20 mph

Humidity62%

Indoor Humidity62% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover37%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

83°
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.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™85°

Heat Index88°

WindSW 10 mph

Air QualityFair

Max UV Index3.4 (Moderate)

Wind Gusts21 mph

Humidity65%

Indoor Humidity65% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover12%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

80°
RealFeel® 85°
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.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™82°

Heat Index84°

WindSW 9 mph

Air QualityFair

Max UV Index2.2 (Low)

Wind Gusts20 mph

Humidity72%

Indoor Humidity72% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

78°
RealFeel® 82°
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.
LEARN MORE
rain drop 1%
Chevron down
Sunny

RealFeel Shade™80°

WindSSW 8 mph

Air QualityFair

Max UV Index1.3 (Low)

Wind Gusts20 mph

Humidity77%

Indoor Humidity77% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover8%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

76°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 19%
Chevron down
Partly sunny

RealFeel Shade™78°

WindSSW 8 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts20 mph

Humidity81%

Indoor Humidity81% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

74°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 19%
Chevron down
Partly sunny

RealFeel Shade™76°

WindSSW 8 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts20 mph

Humidity84%

Indoor Humidity84% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

72°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 24%
Chevron down
Intermittent clouds

WindSSW 8 mph

Air QualityFair

Wind Gusts18 mph

Humidity87%

Indoor Humidity87% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover68%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

70°
RealFeel® 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 43%
Chevron down
Intermittent clouds

WindSSW 8 mph

Air QualityFair

Wind Gusts18 mph

Humidity90%

Indoor Humidity90% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling6600 ft

Hourly Weather Forecast for St. Thomas

AccuWeather's hourly forecast for St. Thomas provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 74° with a RealFeel® of 80°, mostly cloudy with a 33% 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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