As of 23:28 CDT

Weather in Princeton, IL

57°

Princeton, Thursday, 15 October, 23:28

Overcast. Feels like 57°. High 64°, low 57°.

Pressure29.88 inHg

Wind18 mph NW

Humidity90%

Visibility6.2 mi

Dew point54°

See detailed hourly forecast

Fri, 1657° / 46°

0.02

57 °

Princeton, Friday, 16 October

Light rain. High 57°, low 46°.

Pressure30.15 inHg

Wind16.1 mph NW

Humidity69%

Visibility6.2 mi

Dew point42°

Sat, 1756° / 35°

56 °

Princeton, Saturday, 17 October

Clear. High 56°, low 35°.

Pressure30.56 inHg

Wind4.4 mph SW

Humidity46%

Visibility6.2 mi

Dew point29°

Sun, 1862° / 41°

62 °

Princeton, Sunday, 18 October

Clear. High 62°, low 41°.

Pressure30.45 inHg

Wind12.5 mph SW

Humidity48%

Visibility6.2 mi

Dew point39°

Mon, 1964° / 42°

64 °

Princeton, Monday, 19 October

Clear. High 64°, low 42°.

Pressure30.36 inHg

Wind6.3 mph S

Humidity53%

Visibility6.2 mi

Dew point42°

Tue, 2066° / 44°

66 °

Princeton, Tuesday, 20 October

Clear. High 66°, low 44°.

Pressure30.33 inHg

Wind7 mph SE

Humidity43%

Visibility—

Dew point40°

Wed, 2169° / 45°

69 °

Princeton, Wednesday, 21 October

Mostly clear. High 69°, low 45°.

Pressure30.30 inHg

Wind6.2 mph SE

Humidity44%

Visibility—

Dew point42°

Thu, 2272° / 53°

72 °

Princeton, Thursday, 22 October

Partly cloudy. High 72°, low 53°.

Pressure30.24 inHg

Wind8.4 mph S

Humidity37%

Visibility—

Dew point41°

Fri, 2372° / 55°

72 °

Princeton, Friday, 23 October

Partly cloudy. High 72°, low 55°.

Pressure30.18 inHg

Wind10.5 mph SE

Humidity35%

Visibility—

Dew point40°

Sat, 2472° / 56°

72 °

Princeton, Saturday, 24 October

Overcast. High 72°, low 56°.

Pressure30.21 inHg

Wind10 mph SE

Humidity39%

Visibility—

Dew point42°

Sun, 2569° / 54°

69 °

Princeton, Sunday, 25 October

Overcast. High 69°, low 54°.

Pressure30.27 inHg

Wind7.4 mph E

Humidity40%

Visibility—

Dew point42°

Mon, 2668° / 55°

68 °

Princeton, Monday, 26 October

Overcast. High 68°, low 55°.

Pressure30.03 inHg

Wind13.9 mph SE

Humidity51%

Visibility—

Dew point45°

Tue, 2760° / 47°

60 °

Princeton, Tuesday, 27 October

Overcast. High 60°, low 47°.

Pressure30.03 inHg

Wind12.7 mph W

Humidity65%

Visibility—

Dew point44°

Wed, 2852° / 47°

1.38

52 °

Princeton, Wednesday, 28 October

Heavy rain. High 52°, low 47°.

Pressure29.65 inHg

Wind16.7 mph E

Humidity96%

Visibility—

Dew point49°

Thu, 2957° / 49°

0.08

57 °

Princeton, Thursday, 29 October

Light rain. High 57°, low 49°.

Pressure29.88 inHg

Wind18 mph NW

Humidity71%

Visibility—

Dew point46°

Fri, 3060° / 45°

60 °

Princeton, Friday, 30 October

Clear. High 60°, low 45°.

Pressure30.03 inHg

Wind13.3 mph W

Humidity40%

Visibility—

Dew point34°

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 Princeton, 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 Princeton, 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.