As of 23:28 CST

Weather in Jamestown, IL

54°

Jamestown, Thursday, 5 November, 23:28

Overcast. Feels like 53°. High 62°, low 46°.

Pressure30.00 inHg

Wind9.3 mph NW

Humidity85%

Visibility6.2 mi

Dew point49°

See detailed hourly forecast

Fri, 0654° / 37°

54 °

Jamestown, Friday, 6 November

Overcast. High 54°, low 37°.

Pressure30.18 inHg

Wind10.2 mph N

Humidity52%

Visibility6.2 mi

Dew point36°

Sat, 0753° / 34°

53 °

Jamestown, Saturday, 7 November

Partly cloudy. High 53°, low 34°.

Pressure30.27 inHg

Wind4.6 mph NW

Humidity48%

Visibility6.2 mi

Dew point32°

Sun, 0862° / 38°

62 °

Jamestown, Sunday, 8 November

Clear. High 62°, low 38°.

Pressure30.15 inHg

Wind7.7 mph W

Humidity59%

Visibility6.2 mi

Dew point45°

Mon, 0966° / 40°

66 °

Jamestown, Monday, 9 November

Clear. High 66°, low 40°.

Pressure30.21 inHg

Wind4.7 mph SW

Humidity70%

Visibility6.2 mi

Dew point52°

Tue, 1065° / 46°

65 °

Jamestown, Tuesday, 10 November

Clear. High 65°, low 46°.

Pressure30.09 inHg

Wind6.4 mph SW

Humidity59%

Visibility—

Dew point47°

Wed, 1163° / 44°

63 °

Jamestown, Wednesday, 11 November

Overcast. High 63°, low 44°.

Pressure30.03 inHg

Wind7.7 mph NW

Humidity55%

Visibility—

Dew point44°

Thu, 1252° / 36°

52 °

Jamestown, Thursday, 12 November

Mostly clear. High 52°, low 36°.

Pressure30.09 inHg

Wind7.1 mph N

Humidity47%

Visibility—

Dew point30°

Fri, 1348° / 34°

48 °

Jamestown, Friday, 13 November

Overcast. High 48°, low 34°.

Pressure30.03 inHg

Wind10.8 mph N

Humidity42%

Visibility—

Dew point24°

Sat, 1447° / 29°

47 °

Jamestown, Saturday, 14 November

Clear. High 47°, low 29°.

Pressure30.27 inHg

Wind7 mph N

Humidity43%

Visibility—

Dew point22°

Sun, 1554° / 32°

54 °

Jamestown, Sunday, 15 November

Clear. High 54°, low 32°.

Pressure30.39 inHg

Wind7.5 mph S

Humidity32%

Visibility—

Dew point20°

Mon, 1664° / 37°

64 °

Jamestown, Monday, 16 November

Clear. High 64°, low 37°.

Pressure30.42 inHg

Wind10.8 mph SW

Humidity34%

Visibility—

Dew point29°

Tue, 1763° / 43°

63 °

Jamestown, Tuesday, 17 November

Partly cloudy. High 63°, low 43°.

Pressure30.33 inHg

Wind12.2 mph S

Humidity23%

Visibility—

Dew point22°

Wed, 1865° / 47°

65 °

Jamestown, Wednesday, 18 November

Overcast. High 65°, low 47°.

Pressure30.12 inHg

Wind17.2 mph SW

Humidity43%

Visibility—

Dew point39°

Thu, 1961° / 50°

61 °

Jamestown, Thursday, 19 November

Light rain. High 61°, low 50°.

Pressure30.21 inHg

Wind10.8 mph SW

Humidity37%

Visibility—

Dew point33°

Fri, 2058° / 49°

0.87

58 °

Jamestown, Friday, 20 November

Rain. High 58°, low 49°.

Pressure29.97 inHg

Wind11.1 mph S

Humidity95%

Visibility—

Dew point54°

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.