42.898°N, 106.474°W · station CPRthr · 88 years of record
69°F
HOTTEST OCT 22 SINCE 2024
forecast high · Oct 22
7-Day Forecast
NWS NDFD forecast high temperature for Casper.
This Day in History
Every year's high on each of the next 7 forecast dates at Casper — toggle a day below. The forecast line shows where it lands; the ringed bar is the hottest on record.
Ranks
#43 / 86
warmest Oct 17 in 86 yrs of record
Warmest Oct 17 ever
79°F
set in 2003
Coolest Oct 17 ever
31°F
set in 1948
Forecast high 64°F — 43rd warmest Oct 17 of 86 years · record 79°F (2003) · warmest since 2024.
Ranks
#40 / 86
warmest Oct 18 in 86 yrs of record
Warmest Oct 18 ever
78°F
set in 2003
Coolest Oct 18 ever
33°F
set in 1996
Forecast high 62°F — 40th warmest Oct 18 of 86 years · record 78°F (2003) · warmest since 2024.
Ranks
#31 / 86
warmest Oct 19 in 86 yrs of record
Warmest Oct 19 ever
79°F
set in 2003
Coolest Oct 19 ever
26°F
set in 1949
Forecast high 66°F — 31st warmest Oct 19 of 86 years · record 79°F (2003) · warmest since 2025.
Ranks
#23 / 86
warmest Oct 20 in 86 yrs of record
Warmest Oct 20 ever
77°F
set in 2003
Coolest Oct 20 ever
24°F
set in 1949
Forecast high 68°F — 23rd warmest Oct 20 of 86 years · record 77°F (2003) · warmest since 2023.
Ranks
#26 / 86
warmest Oct 21 in 86 yrs of record
Warmest Oct 21 ever
77°F
set in 1992
Coolest Oct 21 ever
32°F
set in 1949
Forecast high 68°F — 26th warmest Oct 21 of 86 years · record 77°F (1992) · warmest since 2024.
Ranks
#15 / 86
warmest Oct 22 in 86 yrs of record
Warmest Oct 22 ever
80°F
set in 2003
Coolest Oct 22 ever
32°F
set in 1947
Forecast high 69°F — 15th warmest Oct 22 of 86 years · record 80°F (2003) · warmest since 2024.
Ranks
#27 / 86
warmest Oct 23 in 86 yrs of record
Warmest Oct 23 ever
81°F
set in 2003
Coolest Oct 23 ever
29°F
set in 1975
Forecast high 63°F — 27th warmest Oct 23 of 86 years · record 81°F (2003) · warmest since 2025.
The hottest and coldest ever recorded at Casper in each calendar month, and for the whole 1939–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
60°FJan 30, 1971
-40°FJan 24, 1949
Feb
68°FFeb 21, 1982
-32°FFeb 17, 2006
Mar
83°FMar 21, 2026
-25°FMar 10, 2022
Apr
84°FApr 30, 1992
-6°FApr 12, 1997
May
95°FMay 29, 2003
16°FMay 12, 1953
Jun
102°FJun 24, 1988
25°FJun 10, 2019
Jul
104°FJul 12, 1954
30°FJul 4, 1972
Aug
103°FAug 2, 2026
29°FAug 23, 2015
Sep
100°FSep 4, 2022
15°FSep 28, 1945
Oct
87°FOct 1, 1992
-9°FOct 29, 2019
Nov
73°FNov 4, 2020
-27°FNov 12, 2014
Dec
66°FDec 2, 2021
-42°FDec 22, 2022
All-time
104°FJul 12, 1954
-42°FDec 22, 2022
2026 Records So Far
Records set or tied at Casper so far this year — through Oct 15.
Record Highs in 2026
23 broke
plus 5 tied — daily record highs set this year
Monthly high records this year: Mar (83°F), Aug (103°F), Oct (87°F)
Record Lows in 2026
3 broke
plus 0 tied — daily record lows set this year
Record Warm Nights & Cold Days
Two more daily records, kept separate from the rankings: the warmest a night has ever stayed (record high minimum) and the coldest a day has ever gotten (record low maximum) — the flip side of the usual record high and low.
Warmest low ever
74°F
record high minimum — the night it never cooled · Jul 18, 2006
Coldest high ever
-25°F
record low maximum — the day it never warmed · Feb 3, 1989
Month
Warmest low
Coldest high
Jan
43°FJan 1, 1997
-19°FJan 11, 1963
Feb
42°FFeb 10, 1951
-25°FFeb 3, 1989
Mar
49°FMar 15, 2015
3°FMar 5, 1943
Apr
53°FApr 14, 1942
13°FApr 9, 2013
May
58°FMay 26, 1942
29°FMay 1, 1954
Jun
68°FJun 25, 1988
37°FJun 1, 1951
Jul
74°FJul 18, 2006
54°FJul 11, 1951
Aug
71°FAug 1, 1955
52°FAug 17, 1960
Sep
66°FSep 4, 1960
27°FSep 17, 1965
Oct
58°FOct 8, 1954
8°FOct 29, 2019
Nov
48°FNov 15, 1941
-3°FNov 15, 1955
Dec
48°FDec 3, 1941
-20°FDec 20, 1990
All-time
74°FJul 18, 2006
-25°FFeb 3, 1989
Hot Streaks
Current run
0 days
consecutive days with a high ≥ 90°F
Longest ever
20 days
record run, ended Jul 29 2026
So far in 2026
50 days
days with a high ≥ 90°F this year
Climate Normals
Normal high & low by month, from Casper's own 1991–2020 record. Today's normal high: 58°F · forecast is +11° vs normal.