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As of 19:36 CDT

Weather in Princeton, IL

52°Current weather

Princeton, Sunday, 18 October, 19:36

Clear. Feels like 50°. High 64°, low 40°.

Pressure30.36 inHg
Wind7.5 mph S
Humidity60%
Visibility6.2 mi
Dew point39°
Mon, 1966° / 41°0Partly cloudy
66 °Partly cloudy

Princeton, Monday, 19 October

Partly cloudy. High 66°, low 41°.

Pressure30.39 inHg
Wind4 mph S
Humidity57%
Visibility6.2 mi
Dew point45°
Tue, 2066° / 43°0Clear
66 °Clear

Princeton, Tuesday, 20 October

Clear. High 66°, low 43°.

Pressure30.39 inHg
Wind5.5 mph SE
Humidity51%
Visibility6.2 mi
Dew point45°
Wed, 2167° / 43°0Clear
67 °Clear

Princeton, Wednesday, 21 October

Clear. High 67°, low 43°.

Pressure30.30 inHg
Wind1.4 mph SW
Humidity52%
Visibility6.2 mi
Dew point47°
Thu, 2268° / 47°0Partly cloudy
68 °Partly cloudy

Princeton, Thursday, 22 October

Partly cloudy. High 68°, low 47°.

Pressure30.30 inHg
Wind3.4 mph E
Humidity58%
Visibility6.2 mi
Dew point50°
Fri, 2366° / 48°0Mostly clear
66 °Mostly clear

Princeton, Friday, 23 October

Mostly clear. High 66°, low 48°.

Pressure30.30 inHg
Wind9.9 mph SE
Humidity57%
Visibility—
Dew point47°
Sat, 2472° / 50°0Overcast
72 °Overcast

Princeton, Saturday, 24 October

Overcast. High 72°, low 50°.

Pressure30.30 inHg
Wind14 mph S
Humidity43%
Visibility—
Dew point43°
Sun, 2566° / 56°0Overcast
66 °Overcast

Princeton, Sunday, 25 October

Overcast. High 66°, low 56°.

Pressure30.36 inHg
Wind10.1 mph N
Humidity36%
Visibility—
Dew point37°
Mon, 2663° / 53°0.01Light rain
63 °Light rain

Princeton, Monday, 26 October

Light rain. High 63°, low 53°.

Pressure30.33 inHg
Wind10.6 mph E
Humidity54%
Visibility—
Dew point43°
Tue, 2763° / 51°0Overcast
63 °Overcast

Princeton, Tuesday, 27 October

Overcast. High 63°, low 51°.

Pressure30.30 inHg
Wind9.9 mph E
Humidity54%
Visibility—
Dew point43°
Wed, 2864° / 55°0Overcast
64 °Overcast

Princeton, Wednesday, 28 October

Overcast. High 64°, low 55°.

Pressure30.18 inHg
Wind7.7 mph E
Humidity54%
Visibility—
Dew point46°
Thu, 2969° / 55°0Overcast
69 °Overcast

Princeton, Thursday, 29 October

Overcast. High 69°, low 55°.

Pressure30.03 inHg
Wind12.1 mph S
Humidity56%
Visibility—
Dew point47°
Fri, 3065° / 50°0.33Rain
65 °Rain

Princeton, Friday, 30 October

Rain. High 65°, low 50°.

Pressure29.88 inHg
Wind16.3 mph SW
Humidity49%
Visibility—
Dew point45°
Sat, 3160° / 45°0Overcast
60 °Overcast

Princeton, Saturday, 31 October

Overcast. High 60°, low 45°.

Pressure30.12 inHg
Wind5 mph E
Humidity48%
Visibility—
Dew point37°
Sun, 0156° / 51°0.36Rain
56 °Rain

Princeton, Sunday, 1 November

Rain. High 56°, low 51°.

Pressure29.88 inHg
Wind11.6 mph E
Humidity94%
Visibility—
Dew point51°
Mon, 0254° / 41°0.66Rain
54 °Rain

Princeton, Monday, 2 November

Rain. High 54°, low 41°.

Pressure30.12 inHg
Wind19.1 mph N
Humidity83%
Visibility—
Dew point41°

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.