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As of 05:19 CDT

Weather in Jamestown, IL

51°Current weather

Jamestown, Tuesday, 27 October, 05:19

Overcast. Feels like 50°. High 74°, low 51°.

Pressure30.24 inHg
Wind3.5 mph S
Humidity85%
Visibility6.2 mi
Dew point47°
Wed, 2878° / 51°0Clear
78 °Clear

Jamestown, Wednesday, 28 October

Clear. High 78°, low 51°.

Pressure30.21 inHg
Wind7.9 mph S
Humidity48%
Visibility6.2 mi
Dew point52°
Thu, 2978° / 56°0.01Light rain
78 °Light rain

Jamestown, Thursday, 29 October

Light rain. High 78°, low 56°.

Pressure30.15 inHg
Wind7.6 mph SW
Humidity51%
Visibility6.2 mi
Dew point55°
Fri, 3072° / 58°0.02Light rain
72 °Light rain

Jamestown, Friday, 30 October

Light rain. High 72°, low 58°.

Pressure30.24 inHg
Wind8.7 mph SE
Humidity69%
Visibility6.2 mi
Dew point60°
Sat, 3172° / 60°0Overcast
72 °Overcast

Jamestown, Saturday, 31 October

Overcast. High 72°, low 60°.

Pressure30.18 inHg
Wind6.5 mph E
Humidity64%
Visibility—
Dew point57°
Sun, 0165° / 58°0.26Rain
65 °Rain

Jamestown, Sunday, 1 November

Rain. High 65°, low 58°.

Pressure30.09 inHg
Wind9.1 mph SE
Humidity80%
Visibility—
Dew point58°
Mon, 0262° / 53°0Overcast
62 °Overcast

Jamestown, Monday, 2 November

Overcast. High 62°, low 53°.

Pressure29.88 inHg
Wind9.7 mph N
Humidity64%
Visibility—
Dew point47°
Tue, 0363° / 56°0.03Light rain
63 °Light rain

Jamestown, Tuesday, 3 November

Light rain. High 63°, low 56°.

Pressure30.03 inHg
Wind16.4 mph NE
Humidity70%
Visibility—
Dew point52°
Wed, 0456° / 53°1.28Rain
56 °Rain

Jamestown, Wednesday, 4 November

Rain. High 56°, low 53°.

Pressure29.80 inHg
Wind17.9 mph NE
Humidity94%
Visibility—
Dew point52°
Thu, 0558° / 54°0.16Light rain
58 °Light rain

Jamestown, Thursday, 5 November

Light rain. High 58°, low 54°.

Pressure29.80 inHg
Wind13.6 mph N
Humidity82%
Visibility—
Dew point52°
Fri, 0655° / 42°0Partly cloudy
55 °Partly cloudy

Jamestown, Friday, 6 November

Partly cloudy. High 55°, low 42°.

Pressure30.12 inHg
Wind12.6 mph N
Humidity68%
Visibility—
Dew point42°
Sat, 0752° / 38°0Overcast
52 °Overcast

Jamestown, Saturday, 7 November

Overcast. High 52°, low 38°.

Pressure30.21 inHg
Wind7 mph SE
Humidity48%
Visibility—
Dew point30°
Sun, 0861° / 42°0Overcast
61 °Overcast

Jamestown, Sunday, 8 November

Overcast. High 61°, low 42°.

Pressure30.15 inHg
Wind9.8 mph S
Humidity43%
Visibility—
Dew point35°
Mon, 0967° / 48°0Overcast
67 °Overcast

Jamestown, Monday, 9 November

Overcast. High 67°, low 48°.

Pressure30.12 inHg
Wind15.9 mph S
Humidity59%
Visibility—
Dew point49°
Tue, 1057° / 55°0.54Rain
57 °Rain

Jamestown, Tuesday, 10 November

Rain. High 57°, low 55°.

Pressure29.94 inHg
Wind8.2 mph S
Humidity98%
Visibility—
Dew point56°
Wed, 1161° / 52°0Overcast
61 °Overcast

Jamestown, Wednesday, 11 November

Overcast. High 61°, low 52°.

Pressure29.91 inHg
Wind13.6 mph W
Humidity56%
Visibility—
Dew point44°

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.