Chelmsford, MA

Hourly

4 PM

88° 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 38% Intermittent clouds

• RealFeel Shade™: 86°
• Heat Index: 89°
• Wind: NW 9 mph
• Air Quality: Fair
• Max UV Index: 3.8 (Moderate)
• Wind Gusts: 13 mph
• Humidity: 47%
• Indoor Humidity: 47% (Humid)
• Dew Point: 65° F
• AccuLumen Brightness Index™: 7 (Bright)
• Cloud Cover: 61%
• Visibility: 10 mi
• Cloud Ceiling: 20000 ft

5 PM

86° 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 43% Partly sunny

• RealFeel Shade™: 85°
• Heat Index: 88°
• Wind: NW 9 mph
• Air Quality: Fair
• Max UV Index: 3.3 (Moderate)
• Wind Gusts: 12 mph
• Humidity: 48%
• Indoor Humidity: 48% (Humid)
• Dew Point: 65° F
• AccuLumen Brightness Index™: 8 (Bright)
• Cloud Cover: 45%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

6 PM

85° 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 47% Partly sunny

• RealFeel Shade™: 83°
• Heat Index: 86°
• Wind: NNW 8 mph
• Air Quality: Fair
• Max UV Index: 2.1 (Low)
• Wind Gusts: 9 mph
• Humidity: 51%
• Indoor Humidity: 51% (Humid)
• Dew Point: 65° F
• AccuLumen Brightness Index™: 8 (Bright)
• Cloud Cover: 45%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

7 PM

82° RealFeel® 81° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 51% Partly sunny w/ t-storms

• RealFeel Shade™: 79°
• Heat Index: 84°
• Wind: N 7 mph
• Air Quality: Fair
• Max UV Index: 1.2 (Low)
• Wind Gusts: 7 mph
• Humidity: 60%
• Indoor Humidity: 60% (Very Humid)
• Dew Point: 67° F
• AccuLumen Brightness Index™: 7 (Bright)
• Cloud Cover: 45%
• Rain: 0.05 in
• Visibility: 6 mi
• Cloud Ceiling: 30000 ft

8 PM

80° RealFeel® 80° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 3% Mostly cloudy

• RealFeel Shade™: 80°
• Heat Index: 82°
• Wind: NNW 6 mph
• Air Quality: Fair
• Max UV Index: 0.3 (Low)
• Wind Gusts: 7 mph
• Humidity: 59%
• Indoor Humidity: 59% (Humid)
• Dew Point: 65° F
• AccuLumen Brightness Index™: 1 (Dark)
• Cloud Cover: 76%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

9 PM

77° RealFeel® 77° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly cloudy

• Wind: NNW 6 mph
• Air Quality: Fair
• Wind Gusts: 6 mph
• Humidity: 65%
• Indoor Humidity: 65% (Humid)
• Dew Point: 65° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 76%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

10 PM

75° RealFeel® 74° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly cloudy

• Wind: NNW 6 mph
• Air Quality: Fair
• Wind Gusts: 6 mph
• Humidity: 69%
• Indoor Humidity: 69% (Humid)
• Dew Point: 64° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 76%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

11 PM

72° RealFeel® 70° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly cloudy

• Wind: NNW 6 mph
• Air Quality: Fair
• Wind Gusts: 6 mph
• Humidity: 74%
• Indoor Humidity: 74% (Humid)
• Dew Point: 63° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 76%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft