St. Helena, CA

Hourly

5 AM

48° RealFeel® 50° Chilly RealFeel Guide Chilly 40° to 52° Jacket or sweater is recommended. LEARN MORE 0% Intermittent clouds

• Wind: W 2 mph
• Air Quality: Fair
• Wind Gusts: 5 mph
• Humidity: 100%
• Indoor Humidity: 49% (Ideal Humidity)
• Dew Point: 48° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 64%
• Visibility: 8 mi
• Cloud Ceiling: 20000 ft

6 AM

48° RealFeel® 50° Chilly RealFeel Guide Chilly 40° to 52° Jacket or sweater is recommended. LEARN MORE 0% Mostly cloudy

• Wind: W 2 mph
• Air Quality: Fair
• Wind Gusts: 5 mph
• Humidity: 100%
• Indoor Humidity: 49% (Ideal Humidity)
• Dew Point: 48° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 76%
• Visibility: 8 mi
• Cloud Ceiling: 2500 ft

7 AM

51° RealFeel® 53° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 0% Mostly cloudy

• RealFeel Shade™: 53°
• Wind: SW 2 mph
• Air Quality: Fair
• Max UV Index: 0 (Low)
• Wind Gusts: 6 mph
• Humidity: 94%
• Indoor Humidity: 50% (Ideal Humidity)
• Dew Point: 49° F
• AccuLumen Brightness Index™: 2 (Dark)
• Cloud Cover: 76%
• Visibility: 8 mi
• Cloud Ceiling: 2500 ft

8 AM

53° RealFeel® 58° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 0% Mostly sunny

• RealFeel Shade™: 54°
• Wind: SSW 2 mph
• Air Quality: Fair
• Max UV Index: 1 (Low)
• Wind Gusts: 2 mph
• Humidity: 87%
• Indoor Humidity: 51% (Ideal Humidity)
• Dew Point: 49° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 1500 ft

9 AM

60° RealFeel® 67° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly sunny

• RealFeel Shade™: 61°
• Wind: S 2 mph
• Air Quality: Fair
• Max UV Index: 3 (Moderate)
• Wind Gusts: 4 mph
• Humidity: 73%
• Indoor Humidity: 54% (Ideal Humidity)
• Dew Point: 51° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 11000 ft

10 AM

66° RealFeel® 73° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly sunny

• RealFeel Shade™: 64°
• Wind: SSE 4 mph
• Air Quality: Fair
• Max UV Index: 4 (Moderate)
• Wind Gusts: 5 mph
• Humidity: 61%
• Indoor Humidity: 58% (Ideal Humidity)
• Dew Point: 53° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

11 AM

71° RealFeel® 79° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly sunny

• RealFeel Shade™: 69°
• Wind: SSE 5 mph
• Air Quality: Fair
• Max UV Index: 6 (High)
• Wind Gusts: 6 mph
• Humidity: 54%
• Indoor Humidity: 54% (Ideal Humidity)
• Dew Point: 54° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

12 PM

74° 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 0% Mostly sunny

• RealFeel Shade™: 72°
• Wind: S 6 mph
• Air Quality: Fair
• Max UV Index: 8 (Very High)
• Wind Gusts: 7 mph
• Humidity: 50%
• Indoor Humidity: 50% (Ideal Humidity)
• Dew Point: 54° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

1 PM

77° 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 0% Mostly sunny

• RealFeel Shade™: 74°
• Wind: SSW 6 mph
• Air Quality: Fair
• Max UV Index: 9 (Very High)
• Wind Gusts: 9 mph
• Humidity: 48%
• Indoor Humidity: 48% (Slightly Humid)
• Dew Point: 56° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

2 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 0% Mostly sunny

• RealFeel Shade™: 76°
• Wind: SSW 7 mph
• Air Quality: Fair
• Max UV Index: 8 (Very High)
• Wind Gusts: 13 mph
• Humidity: 47%
• Indoor Humidity: 47% (Slightly Humid)
• Dew Point: 56° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

3 PM

79° 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 0% Mostly sunny

• RealFeel Shade™: 77°
• Wind: SW 7 mph
• Air Quality: Fair
• Max UV Index: 6 (High)
• Wind Gusts: 14 mph
• Humidity: 46%
• Indoor Humidity: 46% (Slightly Humid)
• Dew Point: 57° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

4 PM

77° RealFeel® 80° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly sunny

• RealFeel Shade™: 75°
• Wind: WSW 8 mph
• Air Quality: Fair
• Max UV Index: 4 (Moderate)
• Wind Gusts: 14 mph
• Humidity: 49%
• Indoor Humidity: 49% (Slightly Humid)
• Dew Point: 57° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

5 PM

75° RealFeel® 76° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly sunny

• RealFeel Shade™: 72°
• Wind: WSW 8 mph
• Air Quality: Fair
• Max UV Index: 3 (Moderate)
• Wind Gusts: 15 mph
• Humidity: 53%
• Indoor Humidity: 53% (Slightly Humid)
• Dew Point: 57° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

6 PM

73° RealFeel® 73° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly sunny

• RealFeel Shade™: 71°
• Wind: WSW 7 mph
• Air Quality: Fair
• Max UV Index: 2 (Low)
• Wind Gusts: 12 mph
• Humidity: 54%
• Indoor Humidity: 54% (Slightly Humid)
• Dew Point: 56° F
• AccuLumen Brightness Index™: 9 (Very Bright)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

7 PM

70° RealFeel® 68° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly sunny

• RealFeel Shade™: 68°
• Wind: WSW 7 mph
• Air Quality: Fair
• Max UV Index: 1 (Low)
• Wind Gusts: 9 mph
• Humidity: 58%
• Indoor Humidity: 58% (Ideal Humidity)
• Dew Point: 54° F
• AccuLumen Brightness Index™: 5 (Medium)
• Cloud Cover: 11%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

8 PM

66° RealFeel® 64° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly sunny

• RealFeel Shade™: 64°
• Wind: WSW 6 mph
• Air Quality: Fair
• Max UV Index: 0 (Low)
• Wind Gusts: 7 mph
• Humidity: 63%
• Indoor Humidity: 59% (Ideal Humidity)
• Dew Point: 53° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 26%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

9 PM

61° RealFeel® 60° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 0% Mostly clear

• Wind: WSW 5 mph
• Air Quality: Fair
• Wind Gusts: 6 mph
• Humidity: 72%
• Indoor Humidity: 57% (Ideal Humidity)
• Dew Point: 52° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 26%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

10 PM

58° RealFeel® 58° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 0% Mostly clear

• Wind: WSW 5 mph
• Air Quality: Fair
• Wind Gusts: 6 mph
• Humidity: 77%
• Indoor Humidity: 54% (Ideal Humidity)
• Dew Point: 51° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 26%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

11 PM

56° RealFeel® 55° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 0% Mostly clear

• Wind: WSW 5 mph
• Air Quality: Fair
• Wind Gusts: 5 mph
• Humidity: 82%
• Indoor Humidity: 52% (Ideal Humidity)
• Dew Point: 50° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 26%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft