Monthly outlook for Newcastle, WY: average high 58.1°, average low 40.5°. That is 1° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 18 October (71.4°), the coolest 16 October (28.3°).
58.1°/40.5°
Average high / low
+1°
Above normal
1 / 3
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
58.7°
56.9°
+1°
21 October – 30 October
57.1°
53.3°
+2.1°
31 October – 9 November
at normal
47.4°
—
October records over 66 years
86.2°4 October 1963All-time high
-9.9°26 October 2020All-time low
Mon, 1253° / 43°0
53 °
Newcastle, Monday, 12 October
Overcast. High 53°, low 43°.
Pressure29.88 inHg
Wind10.6 mph NW
Humidity73%
Visibility6.2 mi
Dew point41°
Tue, 1350° / 38°0.09
50 °
Newcastle, Tuesday, 13 October
Rain. High 50°, low 38°.
Pressure30.00 inHg
Wind6.4 mph S
Humidity76%
Visibility6.2 mi
Dew point41°
Wed, 1450° / 42°0.03
50 °
Newcastle, Wednesday, 14 October
Light rain. High 50°, low 42°.
Pressure30.15 inHg
Wind3.4 mph SE
Humidity79%
Visibility6.2 mi
Dew point42°
Thu, 1553° / 37°0
53 °
Newcastle, Thursday, 15 October
Clear. High 53°, low 37°.
Pressure30.42 inHg
Wind16.8 mph N
Humidity37%
Visibility6.2 mi
Dew point18°
Fri, 1652° / 28°0
52 °
Newcastle, Friday, 16 October
Clear. High 52°, low 28°.
Pressure30.68 inHg
Wind9.3 mph SE
Humidity46%
Visibility—
Dew point24°
Sat, 1768° / 38°0
68 °
Newcastle, Saturday, 17 October
Clear. High 68°, low 38°.
Pressure29.97 inHg
Wind8.5 mph E
Humidity30%
Visibility—
Dew point26°
Sun, 1871° / 49°0
71 °
Newcastle, Sunday, 18 October
Mostly clear. High 71°, low 49°.
Pressure29.91 inHg
Wind10.5 mph S
Humidity18%
Visibility—
Dew point21°
Mon, 1970° / 50°0
70 °
Newcastle, Monday, 19 October
Clear. High 70°, low 50°.
Pressure29.88 inHg
Wind12.6 mph S
Humidity22%
Visibility—
Dew point25°
Tue, 2063° / 44°0
63 °
Newcastle, Tuesday, 20 October
Overcast. High 63°, low 44°.
Pressure29.59 inHg
Wind21.3 mph SW
Humidity35%
Visibility—
Dew point33°
Wed, 2150° / 39°0
50 °
Newcastle, Wednesday, 21 October
Overcast. High 50°, low 39°.
Pressure29.94 inHg
Wind17.8 mph NW
Humidity41%
Visibility—
Dew point24°
Thu, 2255° / 33°0
55 °
Newcastle, Thursday, 22 October
Mostly clear. High 55°, low 33°.
Pressure30.09 inHg
Wind25.9 mph NW
Humidity33%
Visibility—
Dew point20°
Fri, 2365° / 39°0
65 °
Newcastle, Friday, 23 October
Clear. High 65°, low 39°.
Pressure30.00 inHg
Wind15.1 mph S
Humidity31%
Visibility—
Dew point25°
Sat, 2466° / 48°0
66 °
Newcastle, Saturday, 24 October
Overcast. High 66°, low 48°.
Pressure29.59 inHg
Wind6.2 mph NE
Humidity19%
Visibility—
Dew point18°
Sun, 2552° / 39°0
52 °
Newcastle, Sunday, 25 October
Overcast. High 52°, low 39°.
Pressure29.97 inHg
Wind14.2 mph N
Humidity51%
Visibility—
Dew point31°
Mon, 2654° / 35°0
54 °
Newcastle, Monday, 26 October
Partly cloudy. High 54°, low 35°.
Pressure30.06 inHg
Wind6.5 mph W
Humidity44%
Visibility—
Dew point27°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2752° / 33°0.04
52 °
Newcastle, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low33°
Average precipitation0.04 in
Chance of precipitation18%
Record high73° (2016)
Record low5° (2020)
Wed, 2852° / 33°0.05
52 °
Newcastle, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high52°
Average low33°
Average precipitation0.05 in
Chance of precipitation23%
Record high74° (2016)
Record low6° (1991)
Thu, 2950° / 32°0.06
50 °
Newcastle, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high50°
Average low32°
Average precipitation0.06 in
Chance of precipitation27%
Record high75° (1968)
Record low1° (1991)
Fri, 3048° / 31°0.03
48 °
Newcastle, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.03 in
Chance of precipitation20%
Record high72° (1965)
Record low-2° (1991)
Sat, 3148° / 30°0.03
48 °
Newcastle, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.03 in
Chance of precipitation20%
Record high70° (1999)
Record low-4° (1991)
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)
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.