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      Elev 502 ft, 38.911 °N 90.140 °W

      Alton, IL

      Summary

      Temperature (°F) Actual Historic Avg. Record
      High Temp544866
      Low Temp423112
      Day Average Temp44.93--
      Precipitation (in) Actual Historic Avg. Record
      Precipitation0.45--
      Dew Point (°F) Actual Historic Avg. Record
      Dew Point43.98--
      High50--
      Low40--
      Average43.98--
      Wind (mph) Actual Historic Avg. Record
      Max Wind Speed15--
      Visibility10--
      Sea Level Pressure (in) Actual Historic Avg. Record
      Sea Level Pressure29.22--
      Astronomy Day Length Rise Set
      Actual Time9h 38m7:00 AM4:38 PM
      Civil Twilight6:30 AM5:08 PM
      Nautical Twilight5:57 AM5:41 PM
      Astronomical Twilight5:25 AM6:13 PM
      Moon: Waning gibbous8:31 PM11:03 AM

      Daily Observations

      TimeTemperatureDew PointHumidityWindWind SpeedWind GustPressurePrecip.Condition
      12:15 AM 43 °F 43 °F 99 % SSE 8 mph - 29.25 in 0.01 in Drizzle
      12:35 AM 43 °F 43 °F 99 % SSE 9 mph - 29.24 in 0.01 in Drizzle
      12:55 AM 43 °F 43 °F 99 % SSE 10 mph - 29.23 in 0.02 in Rain
      1:15 AM 43 °F 43 °F 99 % SE 8 mph - 29.22 in 0.01 in Light Rain
      1:35 AM 43 °F 43 °F 99 % SE 9 mph - 29.21 in 0.01 in Rain
      1:55 AM 43 °F 43 °F 99 % SE 8 mph - 29.2 in 0.02 in Light Rain
      2:15 AM 43 °F 43 °F 99 % ESE 10 mph - 29.18 in 0.01 in Light Rain
      2:35 AM 43 °F 43 °F 99 % CALM 0 mph - 29.18 in 0.02 in Light Rain
      2:55 AM 43 °F 43 °F 99 % CALM 0 mph - 29.19 in 0.02 in Light Drizzle
      3:15 AM 43 °F 43 °F 99 % SE 9 mph - 29.18 in 0.02 in Rain
      3:35 AM 43 °F 43 °F 99 % SE 9 mph - 29.17 in 0.03 in Light Rain
      3:55 AM 43 °F 43 °F 99 % SE 7 mph - 29.17 in 0.04 in Heavy Drizzle
      4:15 AM 43 °F 42 °F 99 % CALM 0 mph - 29.17 in 0.05 in Rain
      4:35 AM 43 °F 42 °F 99 % CALM 0 mph - 29.17 in 0.09 in Light Rain
      4:55 AM 43 °F 42 °F 99 % CALM 0 mph - 29.16 in 0.09 in Drizzle
      5:15 AM 43 °F 43 °F 99 % SSE 10 mph - 29.16 in 0 in Light Drizzle
      5:35 AM 43 °F 43 °F 99 % SSE 10 mph - 29.16 in 0 in Light Drizzle
      5:55 AM 43 °F 43 °F 99 % SSE 10 mph - 29.16 in 0 in Light Drizzle
      6:15 AM 43 °F 43 °F 99 % SSE 8 mph - 29.16 in 0 in Light Drizzle
      6:35 AM 43 °F 43 °F 99 % SSE 9 mph - 29.16 in 0 in Light Rain
      6:50 AM 43 °F 43 °F 100 % S 12 mph - 29.16 in 0 in Light Rain
      7:50 AM 45 °F 43 °F 93 % S 12 mph - 29.17 in 0 in Cloudy
      8:50 AM 45 °F 45 °F 100 % S 12 mph - 29.17 in 0 in Cloudy
      9:50 AM 46 °F 46 °F 100 % S 12 mph - 29.18 in 0 in Cloudy
      10:50 AM 48 °F 46 °F 93 % SSW 15 mph - 29.18 in 0 in Cloudy
      11:50 AM 50 °F 48 °F 94 % SSW 13 mph - 29.17 in 0 in Cloudy
      12:50 PM 52 °F 50 °F 94 % SSW 9 mph - 29.15 in 0 in Cloudy
      1:50 PM 54 °F 50 °F 88 % S 8 mph - 29.15 in 0 in Cloudy
      2:50 PM 54 °F 48 °F 82 % SSW 8 mph - 29.15 in 0 in Mostly Cloudy
      3:50 PM 52 °F 50 °F 94 % SW 13 mph - 29.18 in 0 in Cloudy
      4:40 PM 50 °F 50 °F 100 % W 9 mph - 29.2 in 0 in Mist
      4:50 PM 50 °F 50 °F 100 % W 13 mph - 29.2 in 0 in Mist
      5:50 PM 48 °F 48 °F 100 % W 9 mph - 29.24 in 0 in Cloudy
      6:50 PM 48 °F 46 °F 93 % W 12 mph - 29.28 in 0 in Mist
      7:50 PM 45 °F 45 °F 100 % WNW 13 mph - 29.3 in 0 in Cloudy
      8:50 PM 45 °F 43 °F 93 % WNW 8 mph - 29.32 in 0 in Cloudy
      9:50 PM 43 °F 41 °F 93 % W 9 mph - 29.34 in 0 in Cloudy
      10:15 PM 43 °F 41 °F 93 % W 12 mph - 29.35 in 0 in Cloudy
      10:35 PM 43 °F 41 °F 92 % W 8 mph - 29.36 in 0 in Cloudy
      10:55 PM 42 °F 40 °F 91 % W 9 mph - 29.36 in 0 in Cloudy
      11:15 PM 42 °F 40 °F 91 % W 14 mph 18 mph 29.37 in 0 in Cloudy
      11:35 PM 42 °F 40 °F 92 % W 8 mph - 29.37 in 0 in Cloudy
      11:55 PM 42 °F 40 °F 93 % CALM 0 mph - 29.38 in 0 in Cloudy
      Level Access
      Glossary