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Merna Weather Warning NWS WEATHER ALERT FOR THE MERNA, IL AREA - Issued: 336 AM CDT Sun Sep 20 2026 Merna Weather Warning

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Merna, IL Weather - Hour by Hour Forecast

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Merna, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Mostly Cloudy. Temperature is 69°F21°C, dew point 69°F21°C, humidity 100%. Wind direction is NNE at 10 mph16 km/h with visibility of 10 mi16 km. Barometric pressure is 29.91 in1012 mb.
Today - Showers with a chance of thunderstorms. Highs in the upper 70s. Temperature falling into the mid 70s this afternoon. Northeast win.. Full Forecast
Tonight - A chance of thunderstorms in the evening. Cloudy with a chance of showers. Cooler with lows in the upper 50s. Northeast winds 10 t.. Full Forecast

Merna Hourly Weather

24 Hour Forecast Scroll
Sun, Sep 20
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Merna, IL Hourly Weather - Cloudy - 6:00 AM Merna, IL Hourly Weather - Cloudy - 7:00 AM Merna, IL Hourly Weather - Cloudy - 8:00 AM Merna, IL Hourly Weather - Cloudy - 9:00 AM Merna, IL Hourly Weather - Cloudy - 10:00 AM Merna, IL Hourly Weather - Cloudy - 11:00 AM Merna, IL Hourly Weather - Cloudy - 12:00 PM Merna, IL Hourly Weather - Cloudy - 1:00 PM Merna, IL Hourly Weather - Cloudy - 2:00 PM Merna, IL Hourly Weather - Cloudy - 3:00 PM Merna, IL Hourly Weather - Cloudy - 4:00 PM Merna, IL Hourly Weather - Cloudy - 5:00 PM Merna, IL Hourly Weather - Cloudy - 6:00 PM Merna, IL Hourly Weather - Cloudy - 7:00 PM Merna, IL Hourly Weather - Cloudy - 8:00 PM Merna, IL Hourly Weather - Cloudy - 9:00 PM Merna, IL Hourly Weather - Cloudy - 10:00 PM Merna, IL Hourly Weather - Cloudy - 11:00 PM Merna, IL Hourly Weather - Cloudy - 12:00 AM Merna, IL Hourly Weather - Cloudy - 1:00 AM Merna, IL Hourly Weather - Cloudy - 2:00 AM Merna, IL Hourly Weather - Cloudy - 3:00 AM Merna, IL Hourly Weather - Cloudy - 4:00 AM Merna, IL Hourly Weather - Cloudy - 5:00 AM
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy
70°F21°C 69°F21°C 71°F22°C 72°F22°C 74°F23°C 75°F24°C 75°F24°C 76°F24°C 76°F24°C 75°F24°C 75°F24°C 73°F23°C 72°F22°C 70°F21°C 68°F20°C 66°F19°C 64°F18°C 63°F17°C 63°F17°C 62°F17°C 62°F17°C 61°F16°C 61°F16°C 61°F16°C
Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain - - - - - - Rain Rain Rain Rain
43% 43% 37% 37% 37% 37% 37% 37% 28% 28% 28% 28% 28% 28% 15% 15% 15% 15% 15% 15% 34% 34% 34% 34%
69°F21°C 69°F21°C 70°F21°C 70°F21°C 71°F22°C 71°F22°C 71°F22°C 71°F22°C 71°F22°C 70°F21°C 70°F21°C 69°F21°C 69°F21°C 68°F20°C 67°F19°C 65°F18°C 64°F18°C 63°F17°C 63°F17°C 62°F17°C 62°F17°C 61°F16°C 61°F16°C 61°F16°C
97% 100% 97% 93% 90% 87% 87% 85% 85% 84% 84% 87% 90% 93% 97% 97% 100% 100% 100% 100% 100% 100% 100% 100%
E E S SSW NNW NNW NNW NNW SW SE N NNE NNE NE NE NE NE NE NE NE NE NE NE NE
7 mph 7 mph 7 mph 8 mph 8 mph 8 mph 11 mph 11 mph 11 mph 16 mph 16 mph 16 mph 13 mph 13 mph 13 mph 16 mph 16 mph 16 mph 14 mph 14 mph 14 mph 13 mph 13 mph 13 mph
5 mi8 km 5 mi8 km 6 mi10 km 6 mi10 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 6 mi10 km 6 mi10 km 5 mi8 km 6 mi10 km 6 mi10 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (CDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
Wind Speed
Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KBMI model statistics.

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Prob Precip % = Probability of Precipitation.

Merna 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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