Smithtown, NY

Hourly

2 PM

86° 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 15% Mostly cloudy

• RealFeel Shade™: 88°
• Heat Index: 90°
• Wind: WNW 8 mph
• Air Quality: Fair
• Max UV Index: 5.6 (High)
• Wind Gusts: 14 mph
• Humidity: 61%
• Indoor Humidity: 61% (Very Humid)
• Dew Point: 71° F
• AccuLumen Brightness Index™: 3 (Dull)
• Cloud Cover: 85%
• Visibility: 10 mi
• Cloud Ceiling: 24700 ft

3 PM

88° 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. LEARN MORE 15% Cloudy

• RealFeel Shade™: 90°
• Heat Index: 93°
• Wind: WNW 9 mph
• Air Quality: Fair
• Max UV Index: 3.4 (Moderate)
• Wind Gusts: 14 mph
• Humidity: 56%
• Indoor Humidity: 56% (Very Humid)
• Dew Point: 70° F
• AccuLumen Brightness Index™: 2 (Dark)
• Cloud Cover: 93%
• Visibility: 10 mi
• Cloud Ceiling: 21200 ft

4 PM

87° 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 19% Cloudy

• RealFeel Shade™: 89°
• Heat Index: 92°
• Wind: WNW 9 mph
• Air Quality: Fair
• Max UV Index: 1.9 (Low)
• Wind Gusts: 14 mph
• Humidity: 60%
• Indoor Humidity: 60% (Very Humid)
• Dew Point: 71° F
• AccuLumen Brightness Index™: 1 (Dark)
• Cloud Cover: 96%
• Visibility: 10 mi
• Cloud Ceiling: 17900 ft

5 PM

85° 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 47% Cloudy

• RealFeel Shade™: 86°
• Heat Index: 89°
• Wind: NW 9 mph
• Air Quality: Fair
• Max UV Index: 1.1 (Low)
• Wind Gusts: 13 mph
• Humidity: 61%
• Indoor Humidity: 61% (Very Humid)
• Dew Point: 70° F
• AccuLumen Brightness Index™: 1 (Dark)
• Cloud Cover: 100%
• Visibility: 10 mi
• Cloud Ceiling: 14600 ft

6 PM

83° RealFeel® 84° 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 51% Thunderstorms

• RealFeel Shade™: 84°
• Heat Index: 89°
• Wind: NW 9 mph
• Air Quality: Fair
• Max UV Index: 0.4 (Low)
• Wind Gusts: 12 mph
• Humidity: 74%
• Indoor Humidity: 74% (Extremely Humid)
• Dew Point: 74° F
• AccuLumen Brightness Index™: 1 (Dark)
• Cloud Cover: 100%
• Rain: 0.15 in
• Visibility: 4 mi
• Cloud Ceiling: 1900 ft

7 PM

80° RealFeel® 83° 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% Cloudy

• RealFeel Shade™: 83°
• Heat Index: 83°
• Wind: NW 7 mph
• Air Quality: Fair
• Max UV Index: 0.4 (Low)
• Wind Gusts: 12 mph
• Humidity: 74%
• Indoor Humidity: 74% (Very Humid)
• Dew Point: 71° F
• AccuLumen Brightness Index™: 1 (Dark)
• Cloud Cover: 100%
• Visibility: 10 mi
• Cloud Ceiling: 14600 ft

8 PM

79° 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 34% Cloudy

• RealFeel Shade™: 82°
• Heat Index: 80°
• Wind: W 7 mph
• Air Quality: Fair
• Max UV Index: 0.1 (Low)
• Wind Gusts: 9 mph
• Humidity: 76%
• Indoor Humidity: 76% (Very Humid)
• Dew Point: 71° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 94%
• Visibility: 10 mi
• Cloud Ceiling: 14700 ft

9 PM

77° RealFeel® 81° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 34% Cloudy

• Wind: WNW 7 mph
• Air Quality: Fair
• Wind Gusts: 8 mph
• Humidity: 80%
• Indoor Humidity: 80% (Very Humid)
• Dew Point: 71° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 93%
• Visibility: 10 mi
• Cloud Ceiling: 19800 ft

10 PM

75° RealFeel® 78° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 37% Mostly cloudy

• Wind: NW 6 mph
• Air Quality: Fair
• Wind Gusts: 7 mph
• Humidity: 85%
• Indoor Humidity: 85% (Very Humid)
• Dew Point: 70° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 84%
• Visibility: 10 mi
• Cloud Ceiling: 24900 ft

11 PM

73° RealFeel® 76° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 47% Mostly cloudy

• Wind: NW 6 mph
• Air Quality: Fair
• Wind Gusts: 7 mph
• Humidity: 90%
• Indoor Humidity: 90% (Very Humid)
• Dew Point: 70° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 76%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft