As of 10:24 CDT

Weather in Newcastle, IL

54°

Newcastle, Sunday, 18 October, 10:24

Clear. Feels like 52°. High 64°, low 39°.

Pressure30.50 inHg

Wind4.4 mph SE

Humidity70%

Visibility6.2 mi

Dew point44°

See detailed hourly forecast

Mon, 1969° / 43°

69 °

Newcastle, Monday, 19 October

Clear. High 69°, low 43°.

Pressure30.39 inHg

Wind2.4 mph SW

Humidity46%

Visibility6.2 mi

Dew point45°

Tue, 2069° / 47°

69 °

Newcastle, Tuesday, 20 October

Clear. High 69°, low 47°.

Pressure30.36 inHg

Wind3.5 mph NE

Humidity50%

Visibility6.2 mi

Dew point48°

Wed, 2171° / 47°

71 °

Newcastle, Wednesday, 21 October

Clear. High 71°, low 47°.

Pressure30.30 inHg

Wind2.2 mph NE

Humidity46%

Visibility6.2 mi

Dew point47°

Thu, 2271° / 48°

71 °

Newcastle, Thursday, 22 October

Clear. High 71°, low 48°.

Pressure30.24 inHg

Wind5.6 mph NE

Humidity44%

Visibility—

Dew point44°

Fri, 2370° / 48°

70 °

Newcastle, Friday, 23 October

Clear. High 70°, low 48°.

Pressure30.27 inHg

Wind7.7 mph E

Humidity42%

Visibility—

Dew point42°

Sat, 2479° / 53°

79 °

Newcastle, Saturday, 24 October

Overcast. High 79°, low 53°.

Pressure30.33 inHg

Wind9.5 mph S

Humidity29%

Visibility—

Dew point40°

Sun, 2577° / 59°

77 °

Newcastle, Sunday, 25 October

Overcast. High 77°, low 59°.

Pressure30.39 inHg

Wind12.5 mph SW

Humidity34%

Visibility—

Dew point43°

Mon, 2673° / 57°

73 °

Newcastle, Monday, 26 October

Overcast. High 73°, low 57°.

Pressure30.30 inHg

Wind6.6 mph S

Humidity32%

Visibility—

Dew point40°

Tue, 2777° / 55°

77 °

Newcastle, Tuesday, 27 October

Overcast. High 77°, low 55°.

Pressure30.21 inHg

Wind8 mph SE

Humidity27%

Visibility—

Dew point37°

Wed, 2868° / 62°

0.2

68 °

Newcastle, Wednesday, 28 October

Rain. High 68°, low 62°.

Pressure30.03 inHg

Wind11.3 mph S

Humidity88%

Visibility—

Dew point61°

Thu, 2982° / 65°

0.19

82 °

Newcastle, Thursday, 29 October

Light rain. High 82°, low 65°.

Pressure29.83 inHg

Wind12.2 mph SW

Humidity72%

Visibility—

Dew point64°

Fri, 3084° / 64°

0.28

84 °

Newcastle, Friday, 30 October

Rain. High 84°, low 64°.

Pressure29.77 inHg

Wind13.9 mph S

Humidity49%

Visibility—

Dew point60°

Sat, 3169° / 48°

0.53

69 °

Newcastle, Saturday, 31 October

Rain. High 69°, low 48°.

Pressure29.85 inHg

Wind12.7 mph S

Humidity70%

Visibility—

Dew point46°

Sun, 0159° / 41°

59 °

Newcastle, Sunday, 1 November

Clear. High 59°, low 41°.

Pressure30.27 inHg

Wind10.2 mph NW

Humidity27%

Visibility—

Dew point22°

Mon, 0261° / 39°

61 °

Newcastle, Monday, 2 November

Clear. High 61°, low 39°.

Pressure30.42 inHg

Wind5.8 mph E

Humidity30%

Visibility—

Dew point25°

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.