Monthly outlook for Newcastle, WY: average high 54.9°, average low 40.3°. That is 2° above the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 22 October (72.5°), the coolest 28 October (27.1°).
54.9°/40.3°
Average high / low
+2°
Above normal
4 / 3
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
55.3°
53.3°
+1.1°
31 October – 9 November
54.3°
47.4°
+3.8°
10 November – 19 November
at normal
43.7°
—
October records over 66 years
86.2°4 October 1963All-time high
-9.9°26 October 2020All-time low
Thu, 2272° / 49°0
72 °
Newcastle, Thursday, 22 October
Mostly clear. High 72°, low 49°.
Pressure29.97 inHg
Wind8.1 mph S
Humidity42%
Visibility6.2 mi
Dew point44°
Fri, 2372° / 51°0
72 °
Newcastle, Friday, 23 October
Overcast. High 72°, low 51°.
Pressure29.74 inHg
Wind4.5 mph S
Humidity43%
Visibility6.2 mi
Dew point46°
Sat, 2449° / 36°0
49 °
Newcastle, Saturday, 24 October
Partly cloudy. High 49°, low 36°.
Pressure30.33 inHg
Wind8.7 mph NW
Humidity53%
Visibility6.2 mi
Dew point30°
Sun, 2542° / 37°0.3
42 °
Newcastle, Sunday, 25 October
Rain. High 42°, low 37°.
Pressure30.27 inHg
Wind2.5 mph S
Humidity98%
Visibility4.1 mi
Dew point39°
Mon, 2645° / 33°0.01
45 °
Newcastle, Monday, 26 October
Light rain. High 45°, low 33°.
Pressure30.42 inHg
Wind7.4 mph NW
Humidity66%
Visibility—
Dew point31°
Tue, 2744° / 31°0
44 °
Newcastle, Tuesday, 27 October
Overcast. High 44°, low 31°.
Pressure30.27 inHg
Wind15.6 mph NW
Humidity85%
Visibility—
Dew point33°
Wed, 2849° / 27°0
49 °
Newcastle, Wednesday, 28 October
Clear. High 49°, low 27°.
Pressure30.36 inHg
Wind10.5 mph NW
Humidity36%
Visibility—
Dew point17°
Thu, 2950° / 32°0
50 °
Newcastle, Thursday, 29 October
Overcast. High 50°, low 32°.
Pressure30.12 inHg
Wind15.6 mph SE
Humidity40%
Visibility—
Dew point22°
Fri, 3061° / 41°0
61 °
Newcastle, Friday, 30 October
Mostly clear. High 61°, low 41°.
Pressure29.80 inHg
Wind7.4 mph N
Humidity25%
Visibility—
Dew point20°
Sat, 3161° / 43°0
61 °
Newcastle, Saturday, 31 October
Overcast. High 61°, low 43°.
Pressure29.83 inHg
Wind7.3 mph S
Humidity31%
Visibility—
Dew point26°
Sun, 0149° / 47°0.28
49 °
Newcastle, Sunday, 1 November
Light rain. High 49°, low 47°.
Pressure29.91 inHg
Wind5.6 mph E
Humidity81%
Visibility—
Dew point44°
Mon, 0248° / 47°0.14
48 °
Newcastle, Monday, 2 November
Light rain. High 48°, low 47°.
Pressure30.09 inHg
Wind3.8 mph NW
Humidity96%
Visibility—
Dew point46°
Tue, 0352° / 43°0.06
52 °
Newcastle, Tuesday, 3 November
Light rain. High 52°, low 43°.
Pressure30.27 inHg
Wind13.6 mph S
Humidity91%
Visibility—
Dew point44°
Wed, 0456° / 41°0
56 °
Newcastle, Wednesday, 4 November
Clear. High 56°, low 41°.
Pressure30.06 inHg
Wind8.8 mph SE
Humidity59%
Visibility—
Dew point37°
Thu, 0560° / 44°0
60 °
Newcastle, Thursday, 5 November
Clear. High 60°, low 44°.
Pressure30.03 inHg
Wind5.7 mph NW
Humidity42%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0648° / 29°0.03
48 °
Newcastle, Friday, 6 November
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.03 in
Chance of precipitation13%
Record high70° (2010)
Record low-5° (2003)
Sat, 0748° / 29°0.02
48 °
Newcastle, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.02 in
Chance of precipitation12%
Record high69° (1999)
Record low-1° (1971)
Sun, 0847° / 29°0.06
47 °
Newcastle, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.06 in
Chance of precipitation23%
Record high73° (1999)
Record low1° (2000)
Mon, 0944° / 28°0.04
44 °
Newcastle, Monday, 9 November
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.04 in
Chance of precipitation18%
Record high65° (2016)
Record low-2° (1966)
Tue, 1044° / 26°0.04
44 °
Newcastle, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high44°
Average low26°
Average precipitation0.04 in
Chance of precipitation18%
Record high64° (2007)
Record low-9° (1986)
Wed, 1143° / 26°0.01
43 °
Newcastle, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.01 in
Chance of precipitation10%
Record high67° (2005)
Record low-12° (1986)
Thu, 1244° / 26°0.02
44 °
Newcastle, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high44°
Average low26°
Average precipitation0.02 in
Chance of precipitation15%
Record high68° (1999)
Record low-11° (1986)
Fri, 1345° / 27°0.04
45 °
Newcastle, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low27°
Average precipitation0.04 in
Chance of precipitation22%
Record high69° (1999)
Record low-15° (1986)
Sat, 1444° / 27°0.02
44 °
Newcastle, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.02 in
Chance of precipitation12%
Record high68° (1999)
Record low-2° (2000)
Sun, 1544° / 26°0.02
44 °
Newcastle, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high44°
Average low26°
Average precipitation0.02 in
Chance of precipitation12%
Record high67° (1999)
Record low-2° (2014)
Mon, 1645° / 27°0.02
45 °
Newcastle, Monday, 16 November
Climate normal for this date — 60-year average.
Average high45°
Average low27°
Average precipitation0.02 in
Chance of precipitation8%
Record high64° (1999)
Record low-8° (2014)
Tue, 1743° / 27°0.03
43 °
Newcastle, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.03 in
Chance of precipitation17%
Record high65° (1999)
Record low-2° (2000)
Wed, 1843° / 26°0.02
43 °
Newcastle, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.02 in
Chance of precipitation12%
Record high65° (2020)
Record low1° (2000)
Thu, 1941° / 26°0.02
41 °
Newcastle, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.02 in
Chance of precipitation10%
Record high67° (2007)
Record low-3° (1985)
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, WY 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, WY 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.