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As of 16:35 CDT

Weather in Jamestown, IL

52°Current weather

Jamestown, Friday, 16 October, 16:35

Partly cloudy. Feels like 51°. High 61°, low 51°.

Pressure30.24 inHg
Wind10.6 mph NW
Humidity84%
Visibility6.2 mi
Dew point48°
Sat, 1760° / 42°0Clear
60 °Clear

Jamestown, Saturday, 17 October

Clear. High 60°, low 42°.

Pressure30.56 inHg
Wind3 mph NE
Humidity51%
Visibility6.2 mi
Dew point37°
Sun, 1863° / 41°0Clear
63 °Clear

Jamestown, Sunday, 18 October

Clear. High 63°, low 41°.

Pressure30.50 inHg
Wind7.3 mph S
Humidity40%
Visibility6.2 mi
Dew point35°
Mon, 1968° / 43°0Clear
68 °Clear

Jamestown, Monday, 19 October

Clear. High 68°, low 43°.

Pressure30.39 inHg
Wind3.2 mph S
Humidity45%
Visibility6.2 mi
Dew point43°
Tue, 2069° / 46°0Clear
69 °Clear

Jamestown, Tuesday, 20 October

Clear. High 69°, low 46°.

Pressure30.36 inHg
Wind2.3 mph SE
Humidity48%
Visibility6.2 mi
Dew point45°
Wed, 2171° / 48°0.02Light rain
71 °Light rain

Jamestown, Wednesday, 21 October

Light rain. High 71°, low 48°.

Pressure30.27 inHg
Wind4.1 mph E
Humidity46%
Visibility—
Dew point45°
Thu, 2277° / 50°0Clear
77 °Clear

Jamestown, Thursday, 22 October

Clear. High 77°, low 50°.

Pressure30.18 inHg
Wind5 mph SE
Humidity33%
Visibility—
Dew point40°
Fri, 2378° / 55°0Overcast
78 °Overcast

Jamestown, Friday, 23 October

Overcast. High 78°, low 55°.

Pressure30.18 inHg
Wind6.3 mph SE
Humidity25%
Visibility—
Dew point35°
Sat, 2481° / 57°0Overcast
81 °Overcast

Jamestown, Saturday, 24 October

Overcast. High 81°, low 57°.

Pressure30.24 inHg
Wind7.3 mph SE
Humidity24%
Visibility—
Dew point36°
Sun, 2580° / 58°0Overcast
80 °Overcast

Jamestown, Sunday, 25 October

Overcast. High 80°, low 58°.

Pressure30.18 inHg
Wind9.5 mph S
Humidity33%
Visibility—
Dew point44°
Mon, 2666° / 51°0Overcast
66 °Overcast

Jamestown, Monday, 26 October

Overcast. High 66°, low 51°.

Pressure30.21 inHg
Wind13.6 mph NW
Humidity65%
Visibility—
Dew point49°
Tue, 2760° / 38°0Partly cloudy
60 °Partly cloudy

Jamestown, Tuesday, 27 October

Partly cloudy. High 60°, low 38°.

Pressure30.36 inHg
Wind10.6 mph N
Humidity26%
Visibility—
Dew point21°
Wed, 2866° / 48°0Overcast
66 °Overcast

Jamestown, Wednesday, 28 October

Overcast. High 66°, low 48°.

Pressure30.24 inHg
Wind9.7 mph S
Humidity18%
Visibility—
Dew point18°
Thu, 2969° / 56°0Overcast
69 °Overcast

Jamestown, Thursday, 29 October

Overcast. High 69°, low 56°.

Pressure29.88 inHg
Wind19.3 mph SW
Humidity56%
Visibility—
Dew point49°
Fri, 3066° / 50°0Mostly clear
66 °Mostly clear

Jamestown, Friday, 30 October

Mostly clear. High 66°, low 50°.

Pressure30.03 inHg
Wind16.8 mph NW
Humidity40%
Visibility—
Dew point38°
Sat, 3169° / 48°0.01Light rain
69 °Light rain

Jamestown, Saturday, 31 October

Light rain. High 69°, low 48°.

Pressure29.97 inHg
Wind12.1 mph S
Humidity37%
Visibility—
Dew point38°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Jamestown, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Jamestown, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.