Weather Alert
Newcastle Weather Warning NWS WEATHER ALERT FOR THE NEWCASTLE, IL AREA - Issued: 1210 PM CDT Tue Sep 15 2026 Newcastle Weather Warning

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Newcastle, IL Weather - Hour by Hour Forecast

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Newcastle, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clear. Temperature is 77°F25°C, dew point 73°F23°C, humidity 86%. Wind direction is N at 0 mph0 km/h with visibility of 10 mi16 km. Barometric pressure is 30.13 in1020 mb.
Tonight - Mostly clear. Lows in the mid 70s. South winds around 5 mph this evening, becoming light and variable... Full Forecast
Wednesday - Mostly sunny. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph... Full Forecast

Newcastle Hourly Weather

24 Hour Forecast Scroll
Tue, Sep 15
11:00 pm
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Midnight
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Noon
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Newcastle, IL Hourly Weather - Mostly Clear - 11:00 PM Newcastle, IL Hourly Weather - Mostly Clear - 12:00 AM Newcastle, IL Hourly Weather - Mostly Clear - 1:00 AM Newcastle, IL Hourly Weather - Mostly Clear - 2:00 AM Newcastle, IL Hourly Weather - Partly Cloudy - 3:00 AM Newcastle, IL Hourly Weather - Partly Cloudy - 4:00 AM Newcastle, IL Hourly Weather - Partly Cloudy - 5:00 AM Newcastle, IL Hourly Weather - Mostly Cloudy - 6:00 AM Newcastle, IL Hourly Weather - Mostly Cloudy - 7:00 AM Newcastle, IL Hourly Weather - Mostly Cloudy - 8:00 AM Newcastle, IL Hourly Weather - Clear - 9:00 AM Newcastle, IL Hourly Weather - Clear - 10:00 AM Newcastle, IL Hourly Weather - Clear - 11:00 AM Newcastle, IL Hourly Weather - Clear - 12:00 PM Newcastle, IL Hourly Weather - Clear - 1:00 PM Newcastle, IL Hourly Weather - Clear - 2:00 PM Newcastle, IL Hourly Weather - Mostly Clear - 3:00 PM Newcastle, IL Hourly Weather - Mostly Clear - 4:00 PM Newcastle, IL Hourly Weather - Mostly Clear - 5:00 PM Newcastle, IL Hourly Weather - Partly Cloudy - 6:00 PM Newcastle, IL Hourly Weather - Partly Cloudy - 7:00 PM Newcastle, IL Hourly Weather - Partly Cloudy - 8:00 PM Newcastle, IL Hourly Weather - Mostly Cloudy - 9:00 PM Newcastle, IL Hourly Weather - Mostly Cloudy - 10:00 PM
Mostly Clear Mostly Clear Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Clear Clear Clear Clear Clear Clear Mostly Clear Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy
76°F24°C 74°F23°C 73°F23°C 73°F23°C 72°F22°C 72°F22°C 72°F22°C 72°F22°C 72°F22°C 78°F26°C 84°F29°C 90°F32°C 93°F34°C 96°F36°C 99°F37°C 99°F37°C 98°F37°C 98°F37°C 94°F34°C 91°F33°C 87°F31°C 84°F29°C 80°F27°C 77°F25°C
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0% 0% 0% 2% 2% 2% 2% 2% 2% 7% 7% 7% 7% 7% 7% 11% 11% 11% 11% 11% 11% 8% 8% 8%
69°F21°C 69°F21°C 69°F21°C 69°F21°C 68°F20°C 68°F20°C 68°F20°C 67°F19°C 67°F19°C 68°F20°C 70°F21°C 71°F22°C 67°F19°C 63°F17°C 59°F15°C 58°F14°C 56°F13°C 55°F13°C 58°F14°C 60°F16°C 63°F17°C 65°F18°C 68°F20°C 70°F21°C
79% 84% 87% 87% 87% 87% 87% 84% 84% 71% 63% 54% 43% 34% 27% 26% 25% 24% 30% 36% 45% 53% 67% 79%
S S S S S S SSE SW SW SSW SSW SSW SSW SSW W W W W SW SSE E ENE ENE NE
2 mph 1 mph 1 mph 1 mph 2 mph 2 mph 2 mph 1 mph 1 mph 1 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 3 mph 3 mph 3 mph 1 mph 1 mph
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 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 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 KHSB model statistics.

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Prob Precip % = Probability of Precipitation.

Newcastle 36 Hour Forecast

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

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