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As of 02:16 CDT

Weather in Newcastle, IL

38°Current weather

Newcastle, Sunday, 18 October, 02:16

Clear. Feels like 35°. High 64°, low 38°.

Pressure30.47 inHg
Wind4.1 mph E
Humidity95%
Visibility6.2 mi
Dew point37°
Mon, 1969° / 45°0Clear
69 °Clear

Newcastle, Monday, 19 October

Clear. High 69°, low 45°.

Pressure30.39 inHg
Wind0.7 mph SW
Humidity43%
Visibility6.2 mi
Dew point44°
Tue, 2070° / 46°0Clear
70 °Clear

Newcastle, Tuesday, 20 October

Clear. High 70°, low 46°.

Pressure30.36 inHg
Wind3.5 mph NE
Humidity44%
Visibility6.2 mi
Dew point45°
Wed, 2171° / 46°0Clear
71 °Clear

Newcastle, Wednesday, 21 October

Clear. High 71°, low 46°.

Pressure30.27 inHg
Wind2.8 mph NE
Humidity47%
Visibility6.2 mi
Dew point46°
Thu, 2272° / 48°0Mostly clear
72 °Mostly clear

Newcastle, Thursday, 22 October

Mostly clear. High 72°, low 48°.

Pressure30.24 inHg
Wind4.1 mph NE
Humidity39%
Visibility—
Dew point42°
Fri, 2373° / 50°0Clear
73 °Clear

Newcastle, Friday, 23 October

Clear. High 73°, low 50°.

Pressure30.27 inHg
Wind7.5 mph E
Humidity42%
Visibility—
Dew point44°
Sat, 2477° / 53°0Overcast
77 °Overcast

Newcastle, Saturday, 24 October

Overcast. High 77°, low 53°.

Pressure30.27 inHg
Wind8 mph S
Humidity23%
Visibility—
Dew point32°
Sun, 2576° / 57°0Overcast
76 °Overcast

Newcastle, Sunday, 25 October

Overcast. High 76°, low 57°.

Pressure30.33 inHg
Wind11.2 mph N
Humidity29%
Visibility—
Dew point39°
Mon, 2663° / 51°0Overcast
63 °Overcast

Newcastle, Monday, 26 October

Overcast. High 63°, low 51°.

Pressure30.39 inHg
Wind8 mph N
Humidity34%
Visibility—
Dew point32°
Tue, 2769° / 47°0Overcast
69 °Overcast

Newcastle, Tuesday, 27 October

Overcast. High 69°, low 47°.

Pressure30.33 inHg
Wind5.1 mph SE
Humidity28%
Visibility—
Dew point30°
Wed, 2876° / 55°0Overcast
76 °Overcast

Newcastle, Wednesday, 28 October

Overcast. High 76°, low 55°.

Pressure30.18 inHg
Wind9.2 mph S
Humidity36%
Visibility—
Dew point43°
Thu, 2982° / 59°0Overcast
82 °Overcast

Newcastle, Thursday, 29 October

Overcast. High 82°, low 59°.

Pressure29.97 inHg
Wind17.2 mph SW
Humidity38%
Visibility—
Dew point51°
Fri, 3070° / 59°0.18Light rain
70 °Light rain

Newcastle, Friday, 30 October

Light rain. High 70°, low 59°.

Pressure30.00 inHg
Wind9.2 mph SW
Humidity64%
Visibility—
Dew point56°
Sat, 3170° / 58°0.37Rain
70 °Rain

Newcastle, Saturday, 31 October

Rain. High 70°, low 58°.

Pressure29.97 inHg
Wind9.8 mph SE
Humidity96%
Visibility—
Dew point63°
Sun, 0178° / 57°0.21Light rain
78 °Light rain

Newcastle, Sunday, 1 November

Light rain. High 78°, low 57°.

Pressure29.94 inHg
Wind12.6 mph SW
Humidity79%
Visibility—
Dew point65°
Mon, 0275° / 52°0Overcast
75 °Overcast

Newcastle, Monday, 2 November

Overcast. High 75°, low 52°.

Pressure30.06 inHg
Wind7.8 mph SE
Humidity45%
Visibility—
Dew point49°

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 Newcastle, 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 Newcastle, 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.