Monthly outlook for Casper Mountain, WY: average high 51.1°, average low 35.5°. That is 5° above the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 22 October (66.2°), the coolest 28 October (25.8°).
51.1°/35.5°
Average high / low
+5°
Above normal
3 / 3
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
53.4°
44.3°
+5.1°
31 October – 9 November
47.2°
38.5°
+4.8°
10 November – 19 November
at normal
34.6°
—
October records over 66 years
73.4°1 October 2011All-time high
-20.6°26 October 2020All-time low
Thu, 2266° / 36°0
66 °
Casper Mountain, Thursday, 22 October
Partly cloudy. High 66°, low 36°.
Pressure30.00 inHg
Wind14 mph SW
Humidity51%
Visibility6.2 mi
Dew point46°
Fri, 2363° / 50°0
63 °
Casper Mountain, Friday, 23 October
Clear. High 63°, low 50°.
Pressure29.80 inHg
Wind23.8 mph SW
Humidity38%
Visibility6.2 mi
Dew point36°
Sat, 2448° / 35°0.01
48 °
Casper Mountain, Saturday, 24 October
Light snow. High 48°, low 35°.
Pressure30.42 inHg
Wind8.1 mph E
Humidity74%
Visibility6.2 mi
Dew point29°
Sun, 2549° / 35°0.06
49 °
Casper Mountain, Sunday, 25 October
Light rain. High 49°, low 35°.
Pressure30.15 inHg
Wind3 mph N
Humidity78%
Visibility6.2 mi
Dew point38°
Mon, 2650° / 38°0
50 °
Casper Mountain, Monday, 26 October
Overcast. High 50°, low 38°.
Pressure30.36 inHg
Wind6.6 mph SW
Humidity64%
Visibility—
Dew point33°
Tue, 2744° / 31°0
44 °
Casper Mountain, Tuesday, 27 October
Partly cloudy. High 44°, low 31°.
Pressure30.15 inHg
Wind7.8 mph SW
Humidity56%
Visibility—
Dew point28°
Wed, 2845° / 26°0
45 °
Casper Mountain, Wednesday, 28 October
Clear. High 45°, low 26°.
Pressure30.27 inHg
Wind8.1 mph NE
Humidity30%
Visibility—
Dew point11°
Thu, 2954° / 32°0
54 °
Casper Mountain, Thursday, 29 October
Overcast. High 54°, low 32°.
Pressure29.97 inHg
Wind19.3 mph SW
Humidity33%
Visibility—
Dew point19°
Fri, 3052° / 36°0
52 °
Casper Mountain, Friday, 30 October
Clear. High 52°, low 36°.
Pressure29.85 inHg
Wind13.7 mph W
Humidity33%
Visibility—
Dew point20°
Sat, 3152° / 36°0
52 °
Casper Mountain, Saturday, 31 October
Overcast. High 52°, low 36°.
Pressure29.77 inHg
Wind11.2 mph NE
Humidity30%
Visibility—
Dew point17°
Sun, 0140° / 36°0.14
40 °
Casper Mountain, Sunday, 1 November
Light rain. High 40°, low 36°.
Pressure29.94 inHg
Wind9 mph NE
Humidity89%
Visibility—
Dew point33°
Mon, 0237° / 36°0.06
37 °
Casper Mountain, Monday, 2 November
Light rain. High 37°, low 36°.
Pressure30.09 inHg
Wind4.9 mph W
Humidity87%
Visibility—
Dew point33°
Tue, 0349° / 36°0
49 °
Casper Mountain, Tuesday, 3 November
Overcast. High 49°, low 36°.
Pressure30.18 inHg
Wind8.7 mph S
Humidity52%
Visibility—
Dew point28°
Wed, 0452° / 35°0
52 °
Casper Mountain, Wednesday, 4 November
Clear. High 52°, low 35°.
Pressure30.06 inHg
Wind18.1 mph SW
Humidity40%
Visibility—
Dew point23°
Thu, 0553° / 36°0
53 °
Casper Mountain, Thursday, 5 November
Mostly clear. High 53°, low 36°.
Pressure30.06 inHg
Wind10 mph W
Humidity42%
Visibility—
Dew point25°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Tue, 1734° / 19°0.04
34 °
Casper Mountain, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high34°
Average low19°
Average precipitation0.04 in
Chance of precipitation20%
Record high59° (1999)
Record low-8° (2022)
Wed, 1833° / 18°0.05
33 °
Casper Mountain, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high33°
Average low18°
Average precipitation0.05 in
Chance of precipitation27%
Record high53° (2008)
Record low-17° (2022)
Thu, 1932° / 17°0.03
32 °
Casper Mountain, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high32°
Average low17°
Average precipitation0.03 in
Chance of precipitation15%
Record high55° (2007)
Record low-6° (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 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.