As of 03:11 CDT

Weather in Princeton, IL

63°

Princeton, Monday, 12 October, 03:11

Overcast. Feels like 63°. High 86°, low 63°.

Pressure29.88 inHg

Wind9.8 mph S

Humidity79%

Visibility6.2 mi

Dew point56°

See detailed hourly forecast

Tue, 1380° / 65°

0.04

80 °

Princeton, Tuesday, 13 October

Light rain. High 80°, low 65°.

Pressure29.85 inHg

Wind7.9 mph W

Humidity58%

Visibility6.2 mi

Dew point60°

Wed, 1472° / 61°

0.55

72 °

Princeton, Wednesday, 14 October

Heavy rain. High 72°, low 61°.

Pressure30.09 inHg

Wind5.3 mph E

Humidity63%

Visibility6.2 mi

Dew point57°

Thu, 1564° / 59°

0.47

64 °

Princeton, Thursday, 15 October

Rain. High 64°, low 59°.

Pressure30.03 inHg

Wind4.9 mph E

Humidity94%

Visibility2.0 mi

Dew point60°

Fri, 1659° / 46°

0.03

59 °

Princeton, Friday, 16 October

Light rain. High 59°, low 46°.

Pressure30.42 inHg

Wind21.5 mph N

Humidity47%

Visibility—

Dew point36°

Sat, 1756° / 38°

56 °

Princeton, Saturday, 17 October

Clear. High 56°, low 38°.

Pressure30.50 inHg

Wind8.7 mph S

Humidity39%

Visibility—

Dew point29°

Sun, 1860° / 38°

60 °

Princeton, Sunday, 18 October

Clear. High 60°, low 38°.

Pressure30.36 inHg

Wind17.1 mph SW

Humidity34%

Visibility—

Dew point26°

Mon, 1968° / 45°

68 °

Princeton, Monday, 19 October

Overcast. High 68°, low 45°.

Pressure30.27 inHg

Wind13.7 mph SW

Humidity39%

Visibility—

Dew point38°

Tue, 2073° / 54°

73 °

Princeton, Tuesday, 20 October

Partly cloudy. High 73°, low 54°.

Pressure30.12 inHg

Wind11.7 mph S

Humidity52%

Visibility—

Dew point51°

Wed, 2176° / 60°

1.14

76 °

Princeton, Wednesday, 21 October

Heavy rain. High 76°, low 60°.

Pressure29.94 inHg

Wind20.1 mph S

Humidity59%

Visibility—

Dew point58°

Thu, 2267° / 51°

0.55

67 °

Princeton, Thursday, 22 October

Rain. High 67°, low 51°.

Pressure29.80 inHg

Wind22 mph S

Humidity55%

Visibility—

Dew point43°

Fri, 2349° / 42°

49 °

Princeton, Friday, 23 October

Mostly clear. High 49°, low 42°.

Pressure30.03 inHg

Wind17.7 mph NW

Humidity56%

Visibility—

Dew point32°

Sat, 2451° / 35°

51 °

Princeton, Saturday, 24 October

Mostly clear. High 51°, low 35°.

Pressure30.15 inHg

Wind8.4 mph NW

Humidity48%

Visibility—

Dew point28°

Sun, 2549° / 45°

0.11

49 °

Princeton, Sunday, 25 October

Light rain. High 49°, low 45°.

Pressure29.77 inHg

Wind12.3 mph E

Humidity65%

Visibility—

Dew point38°

Mon, 2652° / 46°

52 °

Princeton, Monday, 26 October

Overcast. High 52°, low 46°.

Pressure30.03 inHg

Wind7 mph NE

Humidity76%

Visibility—

Dew point43°

Tue, 2752° / 46°

0.01

52 °

Princeton, Tuesday, 27 October

Light rain. High 52°, low 46°.

Pressure30.03 inHg

Wind11.6 mph NW

Humidity56%

Visibility—

Dew point36°

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.