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As of 13:51 CDT

Weather in Jamestown, IL

72°Current weather

Jamestown, Tuesday, 20 October, 13:51

Clear. Feels like 70°. High 72°, low 45°.

Pressure30.33 inHg
Wind2.5 mph SE
Humidity42%
Visibility6.2 mi
Dew point47°
Wed, 2174° / 48°0Clear
74 °Clear

Jamestown, Wednesday, 21 October

Clear. High 74°, low 48°.

Pressure30.27 inHg
Wind0.7 mph S
Humidity51%
Visibility6.2 mi
Dew point48°
Thu, 2272° / 48°0Clear
72 °Clear

Jamestown, Thursday, 22 October

Clear. High 72°, low 48°.

Pressure30.30 inHg
Wind4.9 mph NE
Humidity42%
Visibility6.2 mi
Dew point46°
Fri, 2370° / 50°0Clear
70 °Clear

Jamestown, Friday, 23 October

Clear. High 70°, low 50°.

Pressure30.33 inHg
Wind5.7 mph SE
Humidity51%
Visibility6.2 mi
Dew point49°
Sat, 2471° / 50°0Overcast
71 °Overcast

Jamestown, Saturday, 24 October

Overcast. High 71°, low 50°.

Pressure30.36 inHg
Wind5.9 mph SE
Humidity58%
Visibility6.2 mi
Dew point50°
Sun, 2576° / 52°0Partly cloudy
76 °Partly cloudy

Jamestown, Sunday, 25 October

Partly cloudy. High 76°, low 52°.

Pressure30.39 inHg
Wind6.4 mph S
Humidity41%
Visibility—
Dew point46°
Mon, 2675° / 53°0Overcast
75 °Overcast

Jamestown, Monday, 26 October

Overcast. High 75°, low 53°.

Pressure30.15 inHg
Wind15.5 mph NW
Humidity28%
Visibility—
Dew point37°
Tue, 2752° / 40°0.01Light rain
52 °Light rain

Jamestown, Tuesday, 27 October

Light rain. High 52°, low 40°.

Pressure30.45 inHg
Wind18.6 mph N
Humidity31%
Visibility—
Dew point20°
Wed, 2854° / 33°0Clear
54 °Clear

Jamestown, Wednesday, 28 October

Clear. High 54°, low 33°.

Pressure30.45 inHg
Wind7.2 mph S
Humidity36%
Visibility—
Dew point22°
Thu, 2962° / 37°0Overcast
62 °Overcast

Jamestown, Thursday, 29 October

Overcast. High 62°, low 37°.

Pressure30.15 inHg
Wind12.7 mph W
Humidity30%
Visibility—
Dew point26°
Fri, 3052° / 36°0Clear
52 °Clear

Jamestown, Friday, 30 October

Clear. High 52°, low 36°.

Pressure30.39 inHg
Wind13.8 mph N
Humidity28%
Visibility—
Dew point18°
Sat, 3154° / 31°0Overcast
54 °Overcast

Jamestown, Saturday, 31 October

Overcast. High 54°, low 31°.

Pressure30.30 inHg
Wind7.7 mph SW
Humidity26%
Visibility—
Dew point15°
Sun, 0156° / 39°0Partly cloudy
56 °Partly cloudy

Jamestown, Sunday, 1 November

Partly cloudy. High 56°, low 39°.

Pressure30.18 inHg
Wind9.5 mph W
Humidity47%
Visibility—
Dew point34°
Mon, 0265° / 43°0Clear
65 °Clear

Jamestown, Monday, 2 November

Clear. High 65°, low 43°.

Pressure30.30 inHg
Wind7.3 mph SE
Humidity43%
Visibility—
Dew point38°
Tue, 0366° / 44°0Overcast
66 °Overcast

Jamestown, Tuesday, 3 November

Overcast. High 66°, low 44°.

Pressure30.18 inHg
Wind15.7 mph S
Humidity36%
Visibility—
Dew point36°
Wed, 0464° / 57°0.05Light rain
64 °Light rain

Jamestown, Wednesday, 4 November

Light rain. High 64°, low 57°.

Pressure29.97 inHg
Wind16.3 mph S
Humidity57%
Visibility—
Dew point47°

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.