Monthly outlook for Newcastle, WY: average high 56.3°, average low 39.3°. That is 1° above the climate normal for October. Precipitation is expected on 4 days (about 1.2 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 22 October (73.9°), the coolest 16 October (23.9°).
56.3°/39.3°
Average high / low
+1°
Above normal
4 / 3
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
59.8°
56.2°
+2°
25 October – 3 November
50.6°
50.2°
+0.2°
4 November – 13 November
at normal
46°
—
October records over 66 years
86.2°4 October 1963All-time high
-9.9°26 October 2020All-time low
Fri, 1644° / 24°0
44 °
Newcastle, Friday, 16 October
Clear. High 44°, low 24°.
Pressure30.71 inHg
Wind4.7 mph S
Humidity56%
Visibility6.2 mi
Dew point21°
Sat, 1767° / 39°0
67 °
Newcastle, Saturday, 17 October
Clear. High 67°, low 39°.
Pressure30.12 inHg
Wind3.8 mph SE
Humidity30%
Visibility6.2 mi
Dew point27°
Sun, 1862° / 40°0
62 °
Newcastle, Sunday, 18 October
Overcast. High 62°, low 40°.
Pressure30.06 inHg
Wind6.2 mph SW
Humidity37%
Visibility6.2 mi
Dew point35°
Mon, 1963° / 39°0
63 °
Newcastle, Monday, 19 October
Clear. High 63°, low 39°.
Pressure30.03 inHg
Wind6.7 mph S
Humidity46%
Visibility6.2 mi
Dew point37°
Tue, 2067° / 46°0
67 °
Newcastle, Tuesday, 20 October
Clear. High 67°, low 46°.
Pressure29.94 inHg
Wind8.8 mph E
Humidity43%
Visibility—
Dew point38°
Wed, 2172° / 48°0
72 °
Newcastle, Wednesday, 21 October
Clear. High 72°, low 48°.
Pressure29.88 inHg
Wind9.3 mph S
Humidity36%
Visibility—
Dew point36°
Thu, 2274° / 54°0.01
74 °
Newcastle, Thursday, 22 October
Light rain. High 74°, low 54°.
Pressure29.74 inHg
Wind8.1 mph S
Humidity31%
Visibility—
Dew point37°
Fri, 2355° / 40°0.83
55 °
Newcastle, Friday, 23 October
Rain. High 55°, low 40°.
Pressure29.59 inHg
Wind26.1 mph N
Humidity81%
Visibility—
Dew point42°
Sat, 2446° / 37°0
46 °
Newcastle, Saturday, 24 October
Overcast. High 46°, low 37°.
Pressure30.18 inHg
Wind21.6 mph NW
Humidity49%
Visibility—
Dew point25°
Sun, 2540° / 34°0.08
40 °
Newcastle, Sunday, 25 October
Snow. High 40°, low 34°.
Pressure30.47 inHg
Wind9.1 mph S
Humidity76%
Visibility—
Dew point32°
Mon, 2643° / 38°0.17
43 °
Newcastle, Monday, 26 October
Light rain. High 43°, low 38°.
Pressure30.15 inHg
Wind9.5 mph SE
Humidity94%
Visibility—
Dew point40°
Tue, 2755° / 40°0
55 °
Newcastle, Tuesday, 27 October
Overcast. High 55°, low 40°.
Pressure30.06 inHg
Wind7.6 mph SE
Humidity56%
Visibility—
Dew point35°
Wed, 2866° / 44°0
66 °
Newcastle, Wednesday, 28 October
Overcast. High 66°, low 44°.
Pressure29.91 inHg
Wind9.1 mph W
Humidity39%
Visibility—
Dew point31°
Thu, 2951° / 35°0
51 °
Newcastle, Thursday, 29 October
Clear. High 51°, low 35°.
Pressure30.33 inHg
Wind21 mph NW
Humidity31%
Visibility—
Dew point15°
Fri, 3049° / 37°0
49 °
Newcastle, Friday, 30 October
Clear. High 49°, low 37°.
Pressure30.39 inHg
Wind16.7 mph S
Humidity30%
Visibility—
Dew point17°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)
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.