As of 04:49 CDT

Weather in Princeton, IL

42°

Princeton, Monday, 19 October, 04:49

Clear. Feels like 40°. High 67°, low 41°.

Pressure30.39 inHg

Wind3.8 mph SW

Humidity83%

Visibility6.2 mi

Dew point37°

See detailed hourly forecast

Tue, 2069° / 42°

69 °

Princeton, Tuesday, 20 October

Clear. High 69°, low 42°.

Pressure30.39 inHg

Wind5.4 mph SE

Humidity46%

Visibility6.2 mi

Dew point43°

Wed, 2169° / 44°

69 °

Princeton, Wednesday, 21 October

Clear. High 69°, low 44°.

Pressure30.27 inHg

Wind2.8 mph SW

Humidity49%

Visibility6.2 mi

Dew point47°

Thu, 2269° / 48°

69 °

Princeton, Thursday, 22 October

Clear. High 69°, low 48°.

Pressure30.30 inHg

Wind1.9 mph E

Humidity56%

Visibility6.2 mi

Dew point52°

Fri, 2368° / 50°

68 °

Princeton, Friday, 23 October

Clear. High 68°, low 50°.

Pressure30.30 inHg

Wind8.4 mph SE

Humidity54%

Visibility—

Dew point47°

Sat, 2467° / 50°

67 °

Princeton, Saturday, 24 October

Overcast. High 67°, low 50°.

Pressure30.39 inHg

Wind9.3 mph SE

Humidity50%

Visibility—

Dew point44°

Sun, 2568° / 55°

68 °

Princeton, Sunday, 25 October

Overcast. High 68°, low 55°.

Pressure30.24 inHg

Wind14.4 mph S

Humidity67%

Visibility—

Dew point53°

Mon, 2670° / 49°

70 °

Princeton, Monday, 26 October

Overcast. High 70°, low 49°.

Pressure30.15 inHg

Wind13.7 mph SW

Humidity43%

Visibility—

Dew point42°

Tue, 2761° / 45°

0.39

61 °

Princeton, Tuesday, 27 October

Rain. High 61°, low 45°.

Pressure30.18 inHg

Wind12.1 mph NW

Humidity79%

Visibility—

Dew point42°

Wed, 2843° / 34°

43 °

Princeton, Wednesday, 28 October

Clear. High 43°, low 34°.

Pressure30.45 inHg

Wind13.9 mph N

Humidity42%

Visibility—

Dew point20°

Thu, 2945° / 29°

45 °

Princeton, Thursday, 29 October

Clear. High 45°, low 29°.

Pressure30.42 inHg

Wind6 mph N

Humidity34%

Visibility—

Dew point15°

Fri, 3049° / 31°

49 °

Princeton, Friday, 30 October

Clear. High 49°, low 31°.

Pressure30.47 inHg

Wind6.9 mph SE

Humidity32%

Visibility—

Dew point16°

Sat, 3153° / 34°

53 °

Princeton, Saturday, 31 October

Overcast. High 53°, low 34°.

Pressure30.42 inHg

Wind15.1 mph S

Humidity37%

Visibility—

Dew point23°

Sun, 0163° / 44°

63 °

Princeton, Sunday, 1 November

Overcast. High 63°, low 44°.

Pressure30.27 inHg

Wind15.2 mph SW

Humidity34%

Visibility—

Dew point31°

Mon, 0266° / 51°

66 °

Princeton, Monday, 2 November

Overcast. High 66°, low 51°.

Pressure30.09 inHg

Wind18.5 mph S

Humidity36%

Visibility—

Dew point35°

Tue, 0363° / 55°

0.09

63 °

Princeton, Tuesday, 3 November

Light rain. High 63°, low 55°.

Pressure30.21 inHg

Wind11.9 mph SW

Humidity61%

Visibility—

Dew point47°

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.