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As of 23:45 CDT

Weather in Newcastle, IL

73°Current weather

Newcastle, Saturday, 8 August, 23:45

Clear. Feels like 74°. High 89°, low 72°.

Pressure30.03 inHg
Wind5.4 mph S
Humidity92%
Visibility6.2 mi
Dew point70°
Sun, 0993° / 73°0Clear
93 °Clear

Newcastle, Sunday, 9 August

Clear. High 93°, low 73°.

Pressure30.03 inHg
Wind11.5 mph SW
Humidity50%
Visibility6.2 mi
Dew point69°
Mon, 1097° / 74°0Overcast
97 °Overcast

Newcastle, Monday, 10 August

Overcast. High 97°, low 74°.

Pressure30.03 inHg
Wind11.8 mph SW
Humidity51%
Visibility6.2 mi
Dew point69°
Tue, 11100° / 76°0Clear
100 °Clear

Newcastle, Tuesday, 11 August

Clear. High 100°, low 76°.

Pressure29.94 inHg
Wind13.8 mph SW
Humidity39%
Visibility6.2 mi
Dew point67°
Wed, 1289° / 74°0.4Rain
89 °Rain

Newcastle, Wednesday, 12 August

Rain. High 89°, low 74°.

Pressure29.88 inHg
Wind3.4 mph W
Humidity69%
Visibility6.2 mi
Dew point69°
Thu, 1380° / 72°0.62Rain
80 °Rain

Newcastle, Thursday, 13 August

Rain. High 80°, low 72°.

Pressure29.94 inHg
Wind10.5 mph NE
Humidity98%
Visibility—
Dew point72°
Fri, 1483° / 70°1.21Heavy rain
83 °Heavy rain

Newcastle, Friday, 14 August

Heavy rain. High 83°, low 70°.

Pressure30.00 inHg
Wind11 mph NE
Humidity71%
Visibility—
Dew point71°
Sat, 1578° / 67°0.13Light rain
78 °Light rain

Newcastle, Saturday, 15 August

Light rain. High 78°, low 67°.

Pressure30.18 inHg
Wind11.7 mph E
Humidity73%
Visibility—
Dew point67°
Sun, 1693° / 68°0.04Light rain
93 °Light rain

Newcastle, Sunday, 16 August

Light rain. High 93°, low 68°.

Pressure30.03 inHg
Wind8.6 mph NW
Humidity53%
Visibility—
Dew point69°
Mon, 1789° / 72°0.13Light rain
89 °Light rain

Newcastle, Monday, 17 August

Light rain. High 89°, low 72°.

Pressure30.00 inHg
Wind7 mph W
Humidity76%
Visibility—
Dew point73°
Tue, 1891° / 71°0.22Light rain
91 °Light rain

Newcastle, Tuesday, 18 August

Light rain. High 91°, low 71°.

Pressure29.97 inHg
Wind11.9 mph NW
Humidity56%
Visibility—
Dew point71°
Wed, 1991° / 71°0Overcast
91 °Overcast

Newcastle, Wednesday, 19 August

Overcast. High 91°, low 71°.

Pressure29.91 inHg
Wind7.8 mph N
Humidity47%
Visibility—
Dew point65°
Thu, 2080° / 63°0Clear
80 °Clear

Newcastle, Thursday, 20 August

Clear. High 80°, low 63°.

Pressure30.00 inHg
Wind10.3 mph NE
Humidity47%
Visibility—
Dew point55°
Fri, 2178° / 61°0.07Light rain
78 °Light rain

Newcastle, Friday, 21 August

Light rain. High 78°, low 61°.

Pressure30.03 inHg
Wind7.9 mph E
Humidity58%
Visibility—
Dew point55°
Sat, 2298° / 64°0.19Light rain
98 °Light rain

Newcastle, Saturday, 22 August

Light rain. High 98°, low 64°.

Pressure29.85 inHg
Wind13.2 mph W
Humidity51%
Visibility—
Dew point65°
Sun, 2393° / 71°0.04Light rain
93 °Light rain

Newcastle, Sunday, 23 August

Light rain. High 93°, low 71°.

Pressure29.94 inHg
Wind14.2 mph SW
Humidity44%
Visibility—
Dew point65°

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.