Extended Forecast
Alton, Illinois
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Current Conditions -  °F | °C
As of 4:50 PM on Monday 20 May 2013 (Local Time) from KALN Reporting Station
Overcast Overcast   Feels Like: 26°
Wind Chill: 25°   Ceiling: 4000
Heat Index: 26°   Visibility: 10mi
Dew Point: 18°   Wind: 16mph
Humidity: 69%   Direction: 170° (S)
Pressure: 29.8"   Gusts: NA
Report Text: KALN 202150Z 17014KT 10SM BKN040 OVC047 25/19 A2980
11 PM
Strong Tstms
Strong Tstms 23°
12 AM
Strong Tstms
Strong Tstms 22°
1 AM
Strong Tstms
Strong Tstms 22°
Alerts
Interactive Weather Map
10 Day Forecast -  °F | °C
Monday, May 20
Strong Tstms
Scattered Strong Storms
29°
20°
View Detailed Hourly »
SunriseRise: 5:44 AM Set: 8:11 PM SunsetRise: 3:21 PM Set: 2:36 AM
Day: NA
Night: A chance of some strong thunderstorms. Storms may produce large hail and strong winds. Low 68F. Winds S at 10 to 20 mph. Chance of rain 60%.
UVUV Index: 9 (Very High)
Relative HumidityRelative Humidity: 79%
PrecipitationPrecipitation: 60%
Snow ProbabilitySnow Probability: 0%
Cloud CoverageCloud Coverage: 82%
Moon PhaseMoon Phase: Waxing Gibbous
Wind Speed: 16Mph (25Km, 13Kts)
Wind Direction: 183° (S)
Tuesday, May 21
Strong Tstms
Scattered Strong Storms
27°
18°
View Detailed Hourly »
SunriseRise: 5:43 AM Set: 8:11 PM SunsetRise: 4:27 PM Set: 3:09 AM
Day: Scattered thunderstorms. A few storms may be severe. Storms may produce large hail and strong winds. High 81F. Winds SSW at 10 to 20 mph. Chance of rain 50%.
Night: Variable clouds with strong thunderstorms, especially during the evening. Storms may produce large hail and strong winds. Low 64F. Winds SSW at 10 to 15 mph. Chance of rain 60%.
UVUV Index: 7 (High)
Relative HumidityRelative Humidity: 69%
PrecipitationPrecipitation: 60%
Snow ProbabilitySnow Probability: 0%
Cloud CoverageCloud Coverage: 71%
Moon PhaseMoon Phase: Waxing Gibbous
Wind Speed: 15Mph (24Km, 13Kts)
Wind Direction: 205° (SSW)
Wednesday, May 22
P Cloudy
Partly Cloudy
25°
15°
SunriseRise: 5:43 AM Set: 8:12 PM SunsetRise: 5:35 PM Set: 3:45 AM
Times of sun and clouds. Highs in the upper 70s and lows in the upper 50s.
UVUV Index: 9 (Very High)
Relative HumidityRelative Humidity: 62%
PrecipitationPrecipitation: 20%
Snow ProbabilitySnow Probability: 0%
Cloud CoverageCloud Coverage: 45%
Moon PhaseMoon Phase: Waxing Gibbous
Wind Speed: 15Mph (24Km, 13Kts)
Wind Direction: 251° (WSW)
Thursday, May 23
P Cloudy
Partly Cloudy
20°
11°
SunriseRise: 5:42 AM Set: 8:13 PM SunsetRise: 6:46 PM Set: 4:25 AM
Mix of sun and clouds. Highs in the upper 60s and lows in the low 50s.
UVUV Index: 9 (Very High)
Relative HumidityRelative Humidity: 63%
PrecipitationPrecipitation: 20%
Snow ProbabilitySnow Probability: 0%
Cloud CoverageCloud Coverage: 26%
Moon PhaseMoon Phase: Waxing Gibbous
Wind Speed: 12Mph (20Km, 10Kts)
Wind Direction: 333° (NNW)
Friday, May 24
P Cloudy
Partly Cloudy
23°
12°
SunriseRise: 5:41 AM Set: 8:14 PM SunsetRise: 7:56 PM Set: 5:13 AM
Mix of sun and clouds. Highs in the low 70s and lows in the mid 50s.
UVUV Index: 9 (Very High)
Relative HumidityRelative Humidity: 56%
PrecipitationPrecipitation: 10%
Snow ProbabilitySnow Probability: 0%
Cloud CoverageCloud Coverage: 32%
Moon PhaseMoon Phase: Full
Wind Speed: 10Mph (16Km, 9Kts)
Wind Direction: 57° (ENE)
Saturday, May 25
Cloudy
Cloudy
24°
17°
SunriseRise: 5:41 AM Set: 8:15 PM SunsetRise: 9:03 PM Set: 6:07 AM
Mostly Cloudy. Highs in the mid 70s and lows in the low 60s.
UVUV Index: 6 (High)
Relative HumidityRelative Humidity: 63%
PrecipitationPrecipitation: 20%
Snow ProbabilitySnow Probability: 0%
Cloud CoverageCloud Coverage: 78%
Moon PhaseMoon Phase: Waning Gibbous
Wind Speed: 11Mph (18Km, 9Kts)
Wind Direction: 97° (E)
Sunday, May 26
Iso T-Storms
Isolated Thunderstorms
24°
17°
SunriseRise: 5:40 AM Set: 8:16 PM SunsetRise: 10:03 PM Set: 7:09 AM
Partly cloudy, chance of a thunderstorm. Highs in the mid 70s and lows in the low 60s.
UVUV Index: 6 (High)
Relative HumidityRelative Humidity: 68%
PrecipitationPrecipitation: 30%
Snow ProbabilitySnow Probability: 0%
Cloud CoverageCloud Coverage: 81%
Moon PhaseMoon Phase: Waning Gibbous
Wind Speed: 10Mph (16Km, 9Kts)
Wind Direction: 134° (SE)
Monday, May 27
Iso T-Storms
Isolated Thunderstorms
28°
19°
SunriseRise: 5:40 AM Set: 8:16 PM SunsetRise: 10:56 PM Set: 8:16 AM
Isolated thunderstorms. Highs in the low 80s and lows in the mid 60s.
UVUV Index: 9 (Very High)
Relative HumidityRelative Humidity: 65%
PrecipitationPrecipitation: 30%
Snow ProbabilitySnow Probability: 0%
Cloud CoverageCloud Coverage: 46%
Moon PhaseMoon Phase: Waning Gibbous
Wind Speed: 11Mph (18Km, 9Kts)
Wind Direction: 164° (SSE)
Tuesday, May 28
Cloudy
Cloudy
28°
19°
SunriseRise: 5:39 AM Set: 8:17 PM SunsetRise: 11:42 PM Set: 9:26 AM
Mostly Cloudy. Highs in the low 80s and lows in the upper 60s.
UVUV Index: 6 (High)
Relative HumidityRelative Humidity: 61%
PrecipitationPrecipitation: 20%
Snow ProbabilitySnow Probability: 0%
Cloud CoverageCloud Coverage: 77%
Moon PhaseMoon Phase: Waning Gibbous
Wind Speed: 11Mph (18Km, 9Kts)
Wind Direction: 185° (S)
Wednesday, May 29
Sct T-Storms
Scattered Thunderstorms
28°
21°
SunriseRise: 5:38 AM Set: 8:18 PM SunsetRise: 11:59 PM Set: 10:36 AM
Scattered thunderstorms. Highs in the low 80s and lows in the upper 60s.
UVUV Index: 6 (High)
Relative HumidityRelative Humidity: 66%
PrecipitationPrecipitation: 40%
Snow ProbabilitySnow Probability: 0%
Cloud CoverageCloud Coverage: 75%
Moon PhaseMoon Phase: Waning Gibbous
Wind Speed: 12Mph (20Km, 10Kts)
Wind Direction: 189° (S)
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