Monthly outlook for Casper, WY: average high 59.1°, average low 40°. That is 0.6° above the climate normal for October. Precipitation is expected on 5 days (about 2.0 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 8 October (81.2°), the coolest 17 October (25.9°).
59.1°/40°
Average high / low
+0.6°
Above normal
5 / 4
Wet days / normal
2.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
63.2°
59.1°
+2.2°
17 October – 26 October
52.3°
55.3°
-1.7°
27 October – 5 November
at normal
48°
—
October records over 66 years
83.7°4 October 2024All-time high
-14.1°31 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Bar Nunn (6 mi).
Thu, 0881° / 41°0
81 °
Casper, Thursday, 8 October
Clear. High 81°, low 41°.
Pressure29.97 inHg
Wind9.8 mph W
Humidity19%
Visibility6.2 mi
Dew point24°
Fri, 0980° / 46°0
80 °
Casper, Friday, 9 October
Clear. High 80°, low 46°.
Pressure29.71 inHg
Wind18.6 mph SW
Humidity19%
Visibility6.2 mi
Dew point30°
Sat, 1079° / 60°0
79 °
Casper, Saturday, 10 October
Clear. High 79°, low 60°.
Pressure29.50 inHg
Wind20.3 mph SW
Humidity19%
Visibility6.2 mi
Dew point31°
Sun, 1156° / 45°0.44
56 °
Casper, Sunday, 11 October
Rain. High 56°, low 45°.
Pressure29.88 inHg
Wind8.2 mph NE
Humidity75%
Visibility6.2 mi
Dew point40°
Mon, 1248° / 35°0.61
48 °
Casper, Monday, 12 October
Rain. High 48°, low 35°.
Pressure30.09 inHg
Wind11.9 mph NW
Humidity78%
Visibility—
Dew point33°
Tue, 1372° / 41°0
72 °
Casper, Tuesday, 13 October
Partly cloudy. High 72°, low 41°.
Pressure29.77 inHg
Wind24.2 mph SW
Humidity39%
Visibility—
Dew point39°
Wed, 1464° / 42°0
64 °
Casper, Wednesday, 14 October
Overcast. High 64°, low 42°.
Pressure29.53 inHg
Wind18.7 mph SW
Humidity37%
Visibility—
Dew point34°
Thu, 1539° / 31°0.38
39 °
Casper, Thursday, 15 October
Snow. High 39°, low 31°.
Pressure30.24 inHg
Wind11.9 mph NE
Humidity88%
Visibility—
Dew point30°
Fri, 1633° / 27°0.27
33 °
Casper, Friday, 16 October
Snow. High 33°, low 27°.
Pressure30.65 inHg
Wind14.1 mph E
Humidity91%
Visibility—
Dew point28°
Sat, 1742° / 26°0
42 °
Casper, Saturday, 17 October
Overcast. High 42°, low 26°.
Pressure30.21 inHg
Wind4.6 mph E
Humidity87%
Visibility—
Dew point34°
Sun, 1852° / 41°0.02
52 °
Casper, Sunday, 18 October
Light rain. High 52°, low 41°.
Pressure29.83 inHg
Wind35.6 mph SW
Humidity61%
Visibility—
Dew point34°
Mon, 1959° / 43°0
59 °
Casper, Monday, 19 October
Partly cloudy. High 59°, low 43°.
Pressure29.97 inHg
Wind30.8 mph SW
Humidity37%
Visibility—
Dew point27°
Tue, 2057° / 42°0
57 °
Casper, Tuesday, 20 October
Overcast. High 57°, low 42°.
Pressure30.21 inHg
Wind9.2 mph W
Humidity37%
Visibility—
Dew point27°
Wed, 2158° / 41°0
58 °
Casper, Wednesday, 21 October
Clear. High 58°, low 41°.
Pressure30.24 inHg
Wind10.4 mph W
Humidity38%
Visibility—
Dew point27°
Thu, 2247° / 34°0.26
47 °
Casper, Thursday, 22 October
Snow. High 47°, low 34°.
Pressure30.36 inHg
Wind16.8 mph N
Humidity91%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2355° / 33°0.05
55 °
Casper, Friday, 23 October
Climate normal for this date — 60-year average.
Average high55°
Average low33°
Average precipitation0.05 in
Chance of precipitation18%
Record high77° (2003)
Record low11° (2020)
Sat, 2454° / 33°0.04
54 °
Casper, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high54°
Average low33°
Average precipitation0.04 in
Chance of precipitation15%
Record high74° (1992)
Record low11° (1975)
Sun, 2554° / 32°0.04
54 °
Casper, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high54°
Average low32°
Average precipitation0.04 in
Chance of precipitation17%
Record high75° (2014)
Record low2° (2020)
Mon, 2653° / 33°0.06
53 °
Casper, Monday, 26 October
Climate normal for this date — 60-year average.
Average high53°
Average low33°
Average precipitation0.06 in
Chance of precipitation22%
Record high73° (1977)
Record low-12° (2020)
Tue, 2752° / 30°0.04
52 °
Casper, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low30°
Average precipitation0.04 in
Chance of precipitation18%
Record high73° (2016)
Record low4° (1996)
Wed, 2852° / 31°0.06
52 °
Casper, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high52°
Average low31°
Average precipitation0.06 in
Chance of precipitation20%
Record high72° (2016)
Record low0° (2019)
Thu, 2949° / 31°0.07
49 °
Casper, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.07 in
Chance of precipitation28%
Record high71° (1968)
Record low-5° (2019)
Fri, 3047° / 28°0.04
47 °
Casper, Friday, 30 October
Climate normal for this date — 60-year average.
Average high47°
Average low28°
Average precipitation0.04 in
Chance of precipitation28%
Record high69° (2016)
Record low-13° (2019)
Sat, 3147° / 28°0.05
47 °
Casper, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high47°
Average low28°
Average precipitation0.05 in
Chance of precipitation25%
Record high67° (2014)
Record low-14° (1991)
Sun, 0147° / 27°0.05
47 °
Casper, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high47°
Average low27°
Average precipitation0.05 in
Chance of precipitation23%
Record high68° (2014)
Record low-9° (2002)
Mon, 0246° / 26°0.04
46 °
Casper, Monday, 2 November
Climate normal for this date — 60-year average.
Average high46°
Average low26°
Average precipitation0.04 in
Chance of precipitation20%
Record high68° (2025)
Record low-20° (1991)
Tue, 0346° / 26°0.04
46 °
Casper, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high46°
Average low26°
Average precipitation0.04 in
Chance of precipitation18%
Record high67° (2015)
Record low-16° (1991)
Wed, 0447° / 26°0.01
47 °
Casper, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high47°
Average low26°
Average precipitation0.01 in
Chance of precipitation12%
Record high70° (2020)
Record low-2° (2002)
Thu, 0547° / 27°0.03
47 °
Casper, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low27°
Average precipitation0.03 in
Chance of precipitation17%
Record high68° (2001)
Record low-7° (1967)
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, 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, 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.