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Hottest day yet as heat wave intensifies in the eastern US. Click for the forecast. Chevron right
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Marlborough, MA

82°F
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Marlborough

Massachusetts

82°
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Marlborough, MA Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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9 AM

77°
RealFeel® 86°
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 7%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

RealFeel Shade™82°

WindW 7 mph

Air QualityFair

Max UV Index3.4 (Moderate)

Wind Gusts10 mph

Humidity83%

Indoor Humidity83% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling33000 ft

10 AM

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 7%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

RealFeel Shade™85°

Heat Index87°

WindWNW 8 mph

Air QualityFair

Max UV Index4.8 (Moderate)

Wind Gusts12 mph

Humidity66%

Indoor Humidity66% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover12%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

87°
RealFeel® 98°
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 4%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

RealFeel Shade™90°

Heat Index93°

WindWNW 8 mph

Air QualityFair

Max UV Index7.2 (High)

Wind Gusts12 mph

Humidity58%

Indoor Humidity58% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

92°
RealFeel® 102°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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 4%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

RealFeel Shade™93°

Heat Index97°

WindW 9 mph

Air QualityFair

Max UV Index9.3 (Very High)

Wind Gusts14 mph

Humidity48%

Indoor Humidity48% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover22%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

96°
RealFeel® 105°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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 6%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

RealFeel Shade™96°

Heat Index101°

WindW 9 mph

Air QualityFair

Max UV Index10.2 (Very High)

Wind Gusts16 mph

Humidity39%

Indoor Humidity39% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

97°
RealFeel® 105°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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 11%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

RealFeel Shade™97°

Heat Index102°

WindW 9 mph

Air QualityFair

Max UV Index9.3 (Very High)

Wind Gusts18 mph

Humidity37%

Indoor Humidity37% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

99°
RealFeel® 104°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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 11%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

RealFeel Shade™98°

Heat Index103°

WindW 10 mph

Air QualityPoor

Max UV Index7.2 (High)

Wind Gusts18 mph

Humidity34%

Indoor Humidity34% (Humid)

Dew Point66° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

96°
RealFeel® 109°
Dangerous Heat
RealFeel Guide
Dangerous Heat
108° to 115°
Caution advised. 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 15%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

RealFeel Shade™104°

Heat Index111°

WindW 10 mph

Air QualityFair

Max UV Index4.8 (Moderate)

Wind Gusts20 mph

Humidity53%

Indoor Humidity53% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

94°
RealFeel® 99°
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 47%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

RealFeel Shade™96°

Heat Index100°

WindW 10 mph

Air QualityFair

Max UV Index3.4 (Moderate)

Wind Gusts20 mph

Humidity46%

Indoor Humidity46% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

93°
RealFeel® 95°
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 51%
Chevron down
Partly sunny w/ t-storms
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

RealFeel Shade™92°

Heat Index100°

WindW 10 mph

Air QualityFair

Max UV Index2.2 (Low)

Wind Gusts18 mph

Humidity49%

Indoor Humidity49% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover25%

Rain0.04 in

Visibility6 mi

Cloud Ceiling30000 ft

7 PM

94°
RealFeel® 96°
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 47%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

RealFeel Shade™95°

Heat Index99°

WindW 8 mph

Air QualityFair

Max UV Index1.3 (Low)

Wind Gusts16 mph

Humidity43%

Indoor Humidity43% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

92°
RealFeel® 94°
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 2%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

RealFeel Shade™94°

Heat Index97°

WindW 7 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts14 mph

Humidity48%

Indoor Humidity48% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

89°
RealFeel® 92°
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 2%
Chevron down
Clear
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

Heat Index94°

WindW 7 mph

Air QualityFair

Wind Gusts14 mph

Humidity53%

Indoor Humidity53% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover1%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

87°
RealFeel® 90°
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 2%
Chevron down
Clear
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

Heat Index92°

WindW 7 mph

Air QualityFair

Wind Gusts13 mph

Humidity58%

Indoor Humidity58% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

84°
RealFeel® 87°
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 2%
Chevron down
Clear
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

Heat Index88°

WindW 7 mph

Air QualityFair

Wind Gusts12 mph

Humidity66%

Indoor Humidity66% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Marlborough

AccuWeather's hourly forecast for Marlborough provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 77° with a RealFeel® of 86°, mostly sunny with a 7% 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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