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As of 08:29 CDT

Weather in Williamson, IL

40°Current weather

Williamson, Saturday, 17 October, 08:29

Clear. Feels like 35°. High 55°, low 40°.

Pressure30.53 inHg
Wind6.2 mph N
Humidity90%
Visibility6.2 mi
Dew point37°

10-day forecast for Williamson, IL: 40° to 76°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.

76°
Best day: Friday, October 23
55°
Worst day: Saturday, October 17

Tap any day below to see morning, afternoon, evening and overnight.

Sun, 1862° / 40°0Clear
MorningClear42°feels 38°
AfternoonClear62°feels 59°
EveningClear52°feels 50°
OvernightClear43°feels 40°
62 °Clear

Williamson, Sunday, 18 October

Clear. High 62°, low 40°.

Pressure30.47 inHg
Wind8.3 mph S
Humidity40%
Visibility6.2 mi
Dew point34°
Mon, 1967° / 42°0Clear
MorningClear44°feels 44°
AfternoonClear67°feels 65°
EveningClear54°feels 53°
OvernightClear45°feels 43°
67 °Clear

Williamson, Monday, 19 October

Clear. High 67°, low 42°.

Pressure30.39 inHg
Wind2.6 mph S
Humidity44%
Visibility6.2 mi
Dew point42°
Tue, 2069° / 45°0Overcast
MorningOvercast47°feels 47°
AfternoonOvercast69°feels 68°
EveningClear57°feels 56°
OvernightClear48°feels 46°
69 °Overcast

Williamson, Tuesday, 20 October

Overcast. High 69°, low 45°.

Pressure30.36 inHg
Wind2.4 mph SE
Humidity43%
Visibility6.2 mi
Dew point44°
Wed, 2170° / 46°0Overcast
MorningMostly clear52°feels 50°
AfternoonOvercast69°feels 67°
EveningOvercast59°feels 58°
OvernightClear49°feels 49°
70 °Overcast

Williamson, Wednesday, 21 October

Overcast. High 70°, low 46°.

Pressure30.27 inHg
Wind3.3 mph E
Humidity38%
Visibility—
Dew point40°
Thu, 2273° / 50°0Clear
MorningClear56°feels 56°
AfternoonClear71°feels 69°
EveningClear61°feels 60°
OvernightClear56°feels 55°
73 °Clear

Williamson, Thursday, 22 October

Clear. High 73°, low 50°.

Pressure30.24 inHg
Wind4.5 mph E
Humidity34%
Visibility—
Dew point39°
Fri, 2376° / 54°0Clear
MorningClear60°feels 58°
AfternoonClear73°feels 72°
EveningClear65°feels 63°
OvernightClear60°feels 58°
76 °Clear

Williamson, Friday, 23 October

Clear. High 76°, low 54°.

Pressure30.15 inHg
Wind9 mph SE
Humidity29%
Visibility—
Dew point38°
Sat, 2475° / 56°0Overcast
MorningOvercast60°feels 58°
AfternoonOvercast71°feels 69°
EveningOvercast65°feels 64°
OvernightOvercast63°feels 61°
75 °Overcast

Williamson, Saturday, 24 October

Overcast. High 75°, low 56°.

Pressure30.15 inHg
Wind13.4 mph S
Humidity31%
Visibility—
Dew point37°
Sun, 2576° / 62°0Light rain
MorningLight rain66°feels 65°
AfternoonLight rain74°feels 74°
EveningLight rain66°feels 65°
OvernightLight rain62°feels 61°
76 °Light rain

Williamson, Sunday, 25 October

Light rain. High 76°, low 62°.

Pressure30.09 inHg
Wind12.5 mph W
Humidity49%
Visibility—
Dew point54°
Mon, 2676° / 55°0Clear
MorningClear60°feels 59°
AfternoonClear72°feels 71°
EveningClear67°feels 67°
OvernightClear63°feels 62°
76 °Clear

Williamson, Monday, 26 October

Clear. High 76°, low 55°.

Pressure30.15 inHg
Wind8.6 mph SE
Humidity45%
Visibility—
Dew point48°

About this forecast

How reliable is a 10-day forecast?

The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.

What does the time-of-day table show?

Temperature in Williamson, IL around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.

How is the best day chosen?

We weigh the daytime high against precipitation: a warm, dry day scores highest.