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Rochester Weather Warning NWS WEATHER ALERT FOR THE ROCHESTER, IL AREA - Issued: 407 AM CDT Mon Sep 21 2026 Rochester Weather Warning

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Rochester, IL Weather - Hour by Hour Forecast

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Rochester, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Overcast. Temperature is 62°F17°C, dew point 60°F16°C, humidity 93%. Wind direction is VRB at 5 mph8 km/h with visibility of 10 mi16 km. Barometric pressure is 30.04 in1017 mb.
Today - Cloudy. A chance of showers this morning. Much cooler with highs in the upper 60s. Northeast winds around 10 mph. Chance of rain 3.. Full Forecast
Tonight - Mostly cloudy. Lows in the upper 50s. Northeast winds 5 to 10 mph... Full Forecast

Rochester Hourly Weather

24 Hour Forecast Scroll
Mon, Sep 21
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Rochester, IL Hourly Weather - Cloudy - 9:00 AM Rochester, IL Hourly Weather - Cloudy - 10:00 AM Rochester, IL Hourly Weather - Cloudy - 11:00 AM Rochester, IL Hourly Weather - Cloudy - 12:00 PM Rochester, IL Hourly Weather - Cloudy - 1:00 PM Rochester, IL Hourly Weather - Cloudy - 2:00 PM Rochester, IL Hourly Weather - Cloudy - 3:00 PM Rochester, IL Hourly Weather - Cloudy - 4:00 PM Rochester, IL Hourly Weather - Cloudy - 5:00 PM Rochester, IL Hourly Weather - Cloudy - 6:00 PM Rochester, IL Hourly Weather - Cloudy - 7:00 PM Rochester, IL Hourly Weather - Cloudy - 8:00 PM Rochester, IL Hourly Weather - Cloudy - 9:00 PM Rochester, IL Hourly Weather - Cloudy - 10:00 PM Rochester, IL Hourly Weather - Cloudy - 11:00 PM Rochester, IL Hourly Weather - Cloudy - 12:00 AM Rochester, IL Hourly Weather - Cloudy - 1:00 AM Rochester, IL Hourly Weather - Cloudy - 2:00 AM Rochester, IL Hourly Weather - Cloudy - 3:00 AM Rochester, IL Hourly Weather - Cloudy - 4:00 AM Rochester, IL Hourly Weather - Cloudy - 5:00 AM Rochester, IL Hourly Weather - Cloudy - 6:00 AM Rochester, IL Hourly Weather - Cloudy - 7:00 AM Rochester, IL Hourly Weather - Cloudy - 8:00 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
62°F17°C 63°F17°C 64°F18°C 65°F18°C 66°F19°C 66°F19°C 67°F19°C 67°F19°C 66°F19°C 65°F18°C 64°F18°C 63°F17°C 63°F17°C 62°F17°C 61°F16°C 61°F16°C 60°F16°C 60°F16°C 59°F15°C 59°F15°C 58°F14°C 57°F14°C 56°F13°C 57°F14°C
Rain Rain Rain Rain Rain - - - - - - - - - - - - Rain Rain Rain Rain Rain Rain -
33% 33% 33% 33% 33% 15% 15% 15% 15% 15% 15% 9% 9% 9% 9% 9% 9% 23% 23% 23% 23% 23% 23% 18%
62°F17°C 62°F17°C 62°F17°C 63°F17°C 63°F17°C 63°F17°C 63°F17°C 63°F17°C 63°F17°C 62°F17°C 62°F17°C 62°F17°C 61°F16°C 61°F16°C 61°F16°C 60°F16°C 60°F16°C 59°F15°C 59°F15°C 58°F14°C 57°F14°C 57°F14°C 56°F13°C 56°F13°C
100% 97% 93% 93% 90% 90% 87% 87% 90% 90% 93% 97% 93% 97% 100% 97% 100% 96% 100% 96% 96% 100% 100% 96%
NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE
8 mph 8 mph 8 mph 8 mph 8 mph 8 mph 9 mph 9 mph 9 mph 7 mph 7 mph 7 mph 8 mph 8 mph 8 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 8 mph 8 mph 8 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 10 mi16 km 6 mi10 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
Hour (CDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
Wind Speed
Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KSPI model statistics.

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Prob Precip % = Probability of Precipitation.

Rochester 36 Hour Forecast

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

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