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      Elev 623 ft, 38.894 °N 90.192 °W

      Alton, IL

      Summary

      Temperature (°F) Actual Historic Avg. Record
      High Temp797791
      Low Temp595943
      Day Average Temp66.86--
      Precipitation (in) Actual Historic Avg. Record
      Precipitation0.05--
      Dew Point (°F) Actual Historic Avg. Record
      Dew Point62.17--
      High67--
      Low59--
      Average62.17--
      Wind (mph) Actual Historic Avg. Record
      Max Wind Speed12--
      Visibility10--
      Sea Level Pressure (in) Actual Historic Avg. Record
      Sea Level Pressure29.33--
      Astronomy Day Length Rise Set
      Actual Time14h 32m5:41 AM8:13 PM
      Civil Twilight5:10 AM8:44 PM
      Nautical Twilight4:32 AM9:23 PM
      Astronomical Twilight3:50 AM10:05 PM
      Moon: Full8:53 PM5:22 AM

      Daily Observations

      TimeTemperatureDew PointHumidityWindWind SpeedWind GustPressurePrecip.Condition
      12:15 AM 60 °F 60 °F 99 % CALM 0 mph - 29.38 in 0 in Fair
      12:35 AM 59 °F 59 °F 99 % CALM 0 mph - 29.38 in 0 in Fair
      12:55 AM 59 °F 59 °F 99 % CALM 0 mph - 29.38 in 0 in Fair
      1:15 AM 59 °F 59 °F 99 % CALM 0 mph - 29.38 in 0 in Partly Cloudy
      1:35 AM 60 °F 59 °F 99 % CALM 0 mph - 29.37 in 0 in Mostly Cloudy
      1:55 AM 61 °F 60 °F 98 % CALM 0 mph - 29.36 in 0 in Cloudy
      2:15 AM 61 °F 60 °F 98 % CALM 0 mph - 29.35 in 0 in Mostly Cloudy
      2:35 AM 61 °F 60 °F 98 % CALM 0 mph - 29.35 in 0 in Mostly Cloudy
      2:55 AM 62 °F 60 °F 94 % CALM 0 mph - 29.34 in 0 in Mostly Cloudy
      3:15 AM 61 °F 60 °F 96 % CALM 0 mph - 29.35 in 0 in Mostly Cloudy
      3:35 AM 62 °F 60 °F 94 % CALM 0 mph - 29.35 in 0 in Cloudy
      3:55 AM 62 °F 60 °F 95 % CALM 0 mph - 29.35 in 0 in Thunder in the Vicinity
      4:15 AM 61 °F 61 °F 99 % CALM 0 mph - 29.35 in 0 in Cloudy
      4:35 AM 61 °F 61 °F 99 % CALM 0 mph - 29.35 in 0.02 in Rain
      4:55 AM 61 °F 61 °F 99 % CALM 0 mph - 29.35 in 0.03 in Thunder in the Vicinity
      5:15 AM 61 °F 60 °F 99 % CALM 0 mph - 29.35 in 0 in Thunder in the Vicinity
      5:35 AM 61 °F 60 °F 99 % CALM 0 mph - 29.35 in 0 in Thunder in the Vicinity
      5:55 AM 60 °F 60 °F 99 % CALM 0 mph - 29.35 in 0 in T-Storm
      6:15 AM 60 °F 60 °F 99 % CALM 0 mph - 29.35 in 0 in Mist
      6:35 AM 62 °F 61 °F 98 % CALM 0 mph - 29.35 in 0 in Mostly Cloudy
      6:50 AM 61 °F 61 °F 100 % SE 6 mph - 29.35 in 0 in Mostly Cloudy
      7:50 AM 66 °F 63 °F 88 % VAR 6 mph - 29.34 in 0 in Fair
      8:50 AM 68 °F 59 °F 73 % ESE 9 mph - 29.36 in 0 in Fair
      9:50 AM 72 °F 59 °F 64 % ESE 12 mph - 29.35 in 0 in Fair
      10:50 AM 73 °F 61 °F 65 % SE 9 mph - 29.35 in 0 in Fair
      11:50 AM 73 °F 59 °F 61 % SE 7 mph - 29.33 in 0 in Fair
      12:50 PM 75 °F 61 °F 61 % SE 12 mph - 29.34 in 0 in Cloudy
      1:50 PM 77 °F 63 °F 61 % S 8 mph - 29.32 in 0 in Partly Cloudy
      2:50 PM 79 °F 64 °F 61 % S 8 mph - 29.29 in 0 in Partly Cloudy
      3:50 PM 79 °F 64 °F 61 % NE 6 mph - 29.28 in 0 in Mostly Cloudy
      4:50 PM 77 °F 66 °F 69 % ESE 8 mph - 29.26 in 0 in Mostly Cloudy
      5:50 PM 77 °F 66 °F 69 % SE 7 mph - 29.25 in 0 in Mostly Cloudy
      6:50 PM 77 °F 66 °F 69 % VAR 5 mph - 29.24 in 0 in Partly Cloudy
      7:50 PM 75 °F 66 °F 73 % CALM 0 mph - 29.25 in 0 in Partly Cloudy
      8:50 PM 72 °F 66 °F 83 % ESE 6 mph - 29.27 in 0 in Partly Cloudy
      9:50 PM 70 °F 66 °F 88 % VAR 5 mph - 29.29 in 0 in Fair
      10:15 PM 70 °F 67 °F 91 % CALM 0 mph - 29.29 in 0 in Fair
      10:35 PM 71 °F 67 °F 87 % CALM 0 mph - 29.29 in 0 in Fair
      10:55 PM 71 °F 67 °F 87 % CALM 0 mph - 29.28 in 0 in Fair
      11:15 PM 70 °F 67 °F 92 % CALM 0 mph - 29.28 in 0 in Partly Cloudy
      11:35 PM 70 °F 67 °F 91 % CALM 0 mph - 29.28 in 0 in Mostly Cloudy
      11:55 PM 71 °F 66 °F 86 % CALM 0 mph - 29.29 in 0 in Mostly Cloudy
      Level Access
      Glossary