Monthly outlook for Newcastle, WY: average high 57.5°, average low 38.2°. That is 1.9° above the climate normal for October. Precipitation is expected on 2 days (about 1.5 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 22 October (72.8°), the coolest 16 October (26.4°).
57.5°/38.2°
Average high / low
+1.9°
Above normal
2 / 3
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
60.1°
56.1°
+2.3°
26 October – 4 November
53°
49.6°
+1.9°
5 November – 14 November
at normal
45.4°
—
October records over 66 years
86.2°4 October 1963All-time high
-9.9°26 October 2020All-time low
Sat, 1765° / 41°0
65 °
Newcastle, Saturday, 17 October
Clear. High 65°, low 41°.
Pressure30.12 inHg
Wind3.3 mph SE
Humidity31%
Visibility6.2 mi
Dew point29°
Sun, 1865° / 41°0
65 °
Newcastle, Sunday, 18 October
Partly cloudy. High 65°, low 41°.
Pressure30.03 inHg
Wind6.6 mph SW
Humidity30%
Visibility6.2 mi
Dew point32°
Mon, 1962° / 38°0
62 °
Newcastle, Monday, 19 October
Clear. High 62°, low 38°.
Pressure30.09 inHg
Wind5.8 mph S
Humidity53%
Visibility6.2 mi
Dew point39°
Tue, 2067° / 45°0
67 °
Newcastle, Tuesday, 20 October
Clear. High 67°, low 45°.
Pressure29.94 inHg
Wind4.5 mph S
Humidity43%
Visibility6.2 mi
Dew point42°
Wed, 2164° / 46°0
64 °
Newcastle, Wednesday, 21 October
Clear. High 64°, low 46°.
Pressure30.15 inHg
Wind8.4 mph NE
Humidity44%
Visibility—
Dew point38°
Thu, 2273° / 49°0
73 °
Newcastle, Thursday, 22 October
Clear. High 73°, low 49°.
Pressure30.00 inHg
Wind14.3 mph E
Humidity50%
Visibility—
Dew point43°
Fri, 2360° / 35°0.02
60 °
Newcastle, Friday, 23 October
Light rain. High 60°, low 35°.
Pressure29.65 inHg
Wind26.1 mph NW
Humidity43%
Visibility—
Dew point37°
Sat, 2451° / 33°0.01
51 °
Newcastle, Saturday, 24 October
Snow. High 51°, low 33°.
Pressure30.36 inHg
Wind27.7 mph NW
Humidity25%
Visibility—
Dew point10°
Sun, 2539° / 33°0.26
39 °
Newcastle, Sunday, 25 October
Snow. High 39°, low 33°.
Pressure30.36 inHg
Wind14.1 mph SE
Humidity93%
Visibility—
Dew point33°
Mon, 2654° / 35°0
54 °
Newcastle, Monday, 26 October
Clear. High 54°, low 35°.
Pressure30.06 inHg
Wind15.9 mph NW
Humidity55%
Visibility—
Dew point32°
Tue, 2754° / 36°0
54 °
Newcastle, Tuesday, 27 October
Clear. High 54°, low 36°.
Pressure30.12 inHg
Wind6.4 mph NE
Humidity42%
Visibility—
Dew point27°
Wed, 2858° / 39°0.02
58 °
Newcastle, Wednesday, 28 October
Light rain. High 58°, low 39°.
Pressure29.91 inHg
Wind15.7 mph SE
Humidity40%
Visibility—
Dew point31°
Thu, 2950° / 39°1.14
50 °
Newcastle, Thursday, 29 October
Rain. High 50°, low 39°.
Pressure29.47 inHg
Wind24.6 mph E
Humidity79%
Visibility—
Dew point43°
Fri, 3046° / 38°0.04
46 °
Newcastle, Friday, 30 October
Light rain. High 46°, low 38°.
Pressure30.12 inHg
Wind5.6 mph W
Humidity73%
Visibility—
Dew point34°
Sat, 3156° / 37°0
56 °
Newcastle, Saturday, 31 October
Clear. High 56°, low 37°.
Pressure30.21 inHg
Wind5.4 mph E
Humidity48%
Visibility—
Dew point30°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0147° / 30°0.04
47 °
Newcastle, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.04 in
Chance of precipitation18%
Record high67° (2008)
Record low1° (1991)
Mon, 0248° / 30°0.04
48 °
Newcastle, Monday, 2 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.04 in
Chance of precipitation17%
Record high71° (2008)
Record low-9° (1991)
Tue, 0348° / 30°0.03
48 °
Newcastle, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.03 in
Chance of precipitation20%
Record high68° (2015)
Record low-3° (1991)
Wed, 0449° / 30°0.01
49 °
Newcastle, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.01 in
Chance of precipitation8%
Record high70° (1978)
Record low8° (1970)
Thu, 0548° / 30°0.02
48 °
Newcastle, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.02 in
Chance of precipitation17%
Record high67° (1977)
Record low4° (2003)
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)
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.