As of 08:59 CST

Weather in Jamestown, IL

52°

Jamestown, Thursday, 5 November, 08:59

Clear. Feels like 51°. High 61°, low 48°.

Pressure29.88 inHg

Wind8.7 mph W

Humidity80%

Visibility6.2 mi

Dew point46°

See detailed hourly forecast

Fri, 0653° / 40°

53 °

Jamestown, Friday, 6 November

Overcast. High 53°, low 40°.

Pressure30.18 inHg

Wind10.2 mph N

Humidity58%

Visibility6.2 mi

Dew point37°

Sat, 0753° / 34°

53 °

Jamestown, Saturday, 7 November

Overcast. High 53°, low 34°.

Pressure30.27 inHg

Wind3.6 mph NW

Humidity49%

Visibility6.2 mi

Dew point32°

Sun, 0861° / 37°

61 °

Jamestown, Sunday, 8 November

Clear. High 61°, low 37°.

Pressure30.18 inHg

Wind6.8 mph W

Humidity58%

Visibility6.2 mi

Dew point43°

Mon, 0965° / 41°

65 °

Jamestown, Monday, 9 November

Clear. High 65°, low 41°.

Pressure30.18 inHg

Wind6.6 mph S

Humidity69%

Visibility—

Dew point49°

Tue, 1064° / 45°

64 °

Jamestown, Tuesday, 10 November

Clear. High 64°, low 45°.

Pressure30.09 inHg

Wind6.7 mph SW

Humidity63%

Visibility—

Dew point47°

Wed, 1160° / 44°

60 °

Jamestown, Wednesday, 11 November

Clear. High 60°, low 44°.

Pressure30.06 inHg

Wind14.2 mph N

Humidity28%

Visibility—

Dew point25°

Thu, 1247° / 34°

47 °

Jamestown, Thursday, 12 November

Clear. High 47°, low 34°.

Pressure30.21 inHg

Wind14.4 mph N

Humidity39%

Visibility—

Dew point22°

Fri, 1347° / 28°

47 °

Jamestown, Friday, 13 November

Clear. High 47°, low 28°.

Pressure30.27 inHg

Wind10.2 mph N

Humidity33%

Visibility—

Dew point15°

Sat, 1451° / 29°

51 °

Jamestown, Saturday, 14 November

Clear. High 51°, low 29°.

Pressure30.27 inHg

Wind7.7 mph NW

Humidity29%

Visibility—

Dew point15°

Sun, 1556° / 34°

56 °

Jamestown, Sunday, 15 November

Clear. High 56°, low 34°.

Pressure30.30 inHg

Wind5.1 mph SW

Humidity28%

Visibility—

Dew point19°

Mon, 1658° / 37°

58 °

Jamestown, Monday, 16 November

Partly cloudy. High 58°, low 37°.

Pressure30.21 inHg

Wind7.7 mph S

Humidity27%

Visibility—

Dew point20°

Tue, 1762° / 39°

62 °

Jamestown, Tuesday, 17 November

Clear. High 62°, low 39°.

Pressure30.18 inHg

Wind8.6 mph W

Humidity30%

Visibility—

Dew point26°

Wed, 1864° / 41°

64 °

Jamestown, Wednesday, 18 November

Overcast. High 64°, low 41°.

Pressure30.15 inHg

Wind10.2 mph S

Humidity26%

Visibility—

Dew point24°

Thu, 1967° / 45°

67 °

Jamestown, Thursday, 19 November

Overcast. High 67°, low 45°.

Pressure30.03 inHg

Wind20 mph SW

Humidity44%

Visibility—

Dew point41°

Fri, 2062° / 58°

0.8

62 °

Jamestown, Friday, 20 November

Heavy rain. High 62°, low 58°.

Pressure30.09 inHg

Wind14.2 mph S

Humidity86%

Visibility—

Dew point56°

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.