Monthly outlook for Casper Mountain, WY: average high 53.4°, average low 33.7°. That is 5.3° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.9 inches. The warmest day looks like 21 October (68.2°), the coolest 31 October (20.1°).
53.4°/33.7°
Average high / low
+5.3°
Above normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
59°
46.4°
+7°
28 October – 6 November
43.9°
39.4°
+2.5°
7 November – 16 November
at normal
36.1°
—
October records over 66 years
73.4°1 October 2011All-time high
-20.6°26 October 2020All-time low
Mon, 1965° / 32°0
65 °
Casper Mountain, Monday, 19 October
Clear. High 65°, low 32°.
Pressure30.03 inHg
Wind10.2 mph SW
Humidity41%
Visibility6.2 mi
Dew point38°
Tue, 2066° / 39°0
66 °
Casper Mountain, Tuesday, 20 October
Clear. High 66°, low 39°.
Pressure30.03 inHg
Wind10.5 mph SW
Humidity43%
Visibility6.2 mi
Dew point40°
Wed, 2168° / 44°0.01
68 °
Casper Mountain, Wednesday, 21 October
Light rain. High 68°, low 44°.
Pressure30.12 inHg
Wind1.9 mph SW
Humidity42%
Visibility6.2 mi
Dew point41°
Thu, 2268° / 49°0
68 °
Casper Mountain, Thursday, 22 October
Partly cloudy. High 68°, low 49°.
Pressure30.00 inHg
Wind15.5 mph SW
Humidity48%
Visibility6.2 mi
Dew point45°
Fri, 2363° / 51°0
63 °
Casper Mountain, Friday, 23 October
Mostly clear. High 63°, low 51°.
Pressure29.71 inHg
Wind21.4 mph SW
Humidity40%
Visibility—
Dew point37°
Sat, 2449° / 35°0.02
49 °
Casper Mountain, Saturday, 24 October
Light rain. High 49°, low 35°.
Pressure30.12 inHg
Wind13 mph SW
Humidity67%
Visibility—
Dew point33°
Sun, 2554° / 31°0
54 °
Casper Mountain, Sunday, 25 October
Clear. High 54°, low 31°.
Pressure30.06 inHg
Wind23.9 mph SW
Humidity20%
Visibility—
Dew point7°
Mon, 2644° / 29°0
44 °
Casper Mountain, Monday, 26 October
Clear. High 44°, low 29°.
Pressure30.09 inHg
Wind6.7 mph NE
Humidity47%
Visibility—
Dew point19°
Tue, 2755° / 32°0
55 °
Casper Mountain, Tuesday, 27 October
Clear. High 55°, low 32°.
Pressure29.83 inHg
Wind19.7 mph SW
Humidity21%
Visibility—
Dew point10°
Wed, 2857° / 39°0
57 °
Casper Mountain, Wednesday, 28 October
Overcast. High 57°, low 39°.
Pressure29.68 inHg
Wind27.1 mph SW
Humidity35%
Visibility—
Dew point27°
Thu, 2948° / 28°0
48 °
Casper Mountain, Thursday, 29 October
Light snow. High 48°, low 28°.
Pressure29.41 inHg
Wind35.5 mph SW
Humidity51%
Visibility—
Dew point22°
Fri, 3035° / 23°0
35 °
Casper Mountain, Friday, 30 October
Mostly clear. High 35°, low 23°.
Pressure29.80 inHg
Wind21.6 mph W
Humidity41%
Visibility—
Dew point10°
Sat, 3135° / 20°0
35 °
Casper Mountain, Saturday, 31 October
Mostly clear. High 35°, low 20°.
Pressure30.06 inHg
Wind26.5 mph SW
Humidity36%
Visibility—
Dew point6°
Sun, 0142° / 22°0
42 °
Casper Mountain, Sunday, 1 November
Partly cloudy. High 42°, low 22°.
Pressure29.94 inHg
Wind30 mph SW
Humidity38%
Visibility—
Dew point12°
Mon, 0247° / 30°0
47 °
Casper Mountain, Monday, 2 November
Overcast. High 47°, low 30°.
Pressure29.62 inHg
Wind30.4 mph SW
Humidity27%
Visibility—
Dew point10°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0338° / 21°0.05
38 °
Casper Mountain, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high38°
Average low21°
Average precipitation0.05 in
Chance of precipitation18%
Record high58° (2015)
Record low-12° (1991)
Wed, 0439° / 21°0.02
39 °
Casper Mountain, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high39°
Average low21°
Average precipitation0.02 in
Chance of precipitation13%
Record high60° (1983)
Record low-5° (1967)
Thu, 0539° / 22°0.03
39 °
Casper Mountain, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high39°
Average low22°
Average precipitation0.03 in
Chance of precipitation20%
Record high59° (1999)
Record low-6° (1961)
Fri, 0639° / 23°0.04
39 °
Casper Mountain, Friday, 6 November
Climate normal for this date — 60-year average.
Average high39°
Average low23°
Average precipitation0.04 in
Chance of precipitation22%
Record high58° (1999)
Record low-11° (1971)
Sat, 0740° / 22°0.03
40 °
Casper Mountain, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high40°
Average low22°
Average precipitation0.03 in
Chance of precipitation17%
Record high60° (1999)
Record low-9° (1990)
Sun, 0838° / 22°0.06
38 °
Casper Mountain, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high38°
Average low22°
Average precipitation0.06 in
Chance of precipitation25%
Record high58° (1999)
Record low-1° (2011)
Mon, 0937° / 20°0.04
37 °
Casper Mountain, Monday, 9 November
Climate normal for this date — 60-year average.
Average high37°
Average low20°
Average precipitation0.04 in
Chance of precipitation28%
Record high58° (2016)
Record low-6° (1966)
Tue, 1036° / 19°0.05
36 °
Casper Mountain, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high36°
Average low19°
Average precipitation0.05 in
Chance of precipitation23%
Record high58° (2005)
Record low-18° (1986)
Wed, 1134° / 19°0.04
34 °
Casper Mountain, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high34°
Average low19°
Average precipitation0.04 in
Chance of precipitation18%
Record high56° (1999)
Record low-10° (2019)
Thu, 1236° / 20°0.04
36 °
Casper Mountain, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high36°
Average low20°
Average precipitation0.04 in
Chance of precipitation23%
Record high59° (1999)
Record low-14° (2014)
Fri, 1336° / 20°0.05
36 °
Casper Mountain, Friday, 13 November
Climate normal for this date — 60-year average.
Average high36°
Average low20°
Average precipitation0.05 in
Chance of precipitation27%
Record high58° (1999)
Record low-25° (2014)
Sat, 1435° / 20°0.04
35 °
Casper Mountain, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high35°
Average low20°
Average precipitation0.04 in
Chance of precipitation27%
Record high58° (1999)
Record low-3° (1978)
Sun, 1534° / 19°0.04
34 °
Casper Mountain, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high34°
Average low19°
Average precipitation0.04 in
Chance of precipitation13%
Record high59° (1999)
Record low-12° (2014)
Mon, 1635° / 20°0.03
35 °
Casper Mountain, Monday, 16 November
Climate normal for this date — 60-year average.
Average high35°
Average low20°
Average precipitation0.03 in
Chance of precipitation23%
Record high55° (1999)
Record low-17° (2014)
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 Casper Mountain, 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 Casper Mountain, 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.