44.046°N, 103.054°W · station RAPthr · 85 years of record
78°F
HOTTEST OCT 17 SINCE 2024
forecast high · Oct 17
7-Day Forecast
NWS NDFD forecast high temperature for Rapid City.
This Day in History
Every year's high on each of the next 7 forecast dates at Rapid City — toggle a day below. The forecast line shows where it lands; the ringed bar is the hottest on record.
Ranks
#12 / 84
warmest Oct 17 in 84 yrs of record
Warmest Oct 17 ever
88°F
set in 2024
Coolest Oct 17 ever
38°F
set in 1980
Forecast high 78°F — 12th warmest Oct 17 of 84 years · record 88°F (2024) · warmest since 2024.
Ranks
#31 / 84
warmest Oct 18 in 84 yrs of record
Warmest Oct 18 ever
86°F
set in 2015
Coolest Oct 18 ever
42°F
set in 1951
Forecast high 65°F — 31st warmest Oct 18 of 84 years · record 86°F (2015) · warmest since 2024.
Ranks
#43 / 84
warmest Oct 19 in 84 yrs of record
Warmest Oct 19 ever
89°F
set in 1947
Coolest Oct 19 ever
29°F
set in 2020
Forecast high 63°F — 43rd warmest Oct 19 of 84 years · record 89°F (1947) · warmest since 2025.
Ranks
#16 / 84
warmest Oct 20 in 84 yrs of record
Warmest Oct 20 ever
88°F
set in 1947
Coolest Oct 20 ever
33°F
set in 2020
Forecast high 73°F — 16th warmest Oct 20 of 84 years · record 88°F (1947) · warmest since 2023.
Ranks
#20 / 84
warmest Oct 21 in 84 yrs of record
Warmest Oct 21 ever
86°F
set in 1947
Coolest Oct 21 ever
34°F
set in 1951
Forecast high 71°F — 20th warmest Oct 21 of 84 years · record 86°F (1947) · warmest since 2024.
Ranks
#12 / 84
warmest Oct 22 in 84 yrs of record
Warmest Oct 22 ever
89°F
set in 1992
Coolest Oct 22 ever
28°F
set in 2002
Forecast high 73°F — 12th warmest Oct 22 of 84 years · record 89°F (1992) · warmest since 2024.
Ranks
#16 / 84
warmest Oct 23 in 84 yrs of record
Warmest Oct 23 ever
81°F
set in 1992
Coolest Oct 23 ever
25°F
set in 2002
Forecast high 69°F — 16th warmest Oct 23 of 84 years · record 81°F (1992) · warmest since 2016.
The hottest and coldest ever recorded at Rapid City in each calendar month, and for the whole 1942–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
76°FJan 12, 1987
-27°FJan 18, 1943
Feb
75°FFeb 27, 1988
-31°FFeb 2, 1996
Mar
87°FMar 21, 2026
-21°FMar 8, 1996
Apr
93°FApr 22, 1989
-1°FApr 3, 2020
May
98°FMay 27, 1969
18°FMay 1, 1950
Jun
109°FJun 29, 2002
31°FJun 1, 1951
Jul
112°FJul 25, 2026
39°FJul 1, 1959
Aug
107°FAug 13, 2007
37°FAug 31, 2020
Sep
104°FSep 2, 1960
18°FSep 26, 1942
Oct
96°FOct 2, 2011
-7°FOct 26, 2020
Nov
83°FNov 7, 1999
-19°FNov 14, 1959
Dec
75°FDec 4, 1965
-30°FDec 30, 1990
All-time
112°FJul 25, 2026
-31°FFeb 2, 1996
2026 Records So Far
Records set or tied at Rapid City so far this year — through Oct 15.
New all-time hottest on record — 112°F on Jul 25 broke the 111°F from 2006.
Record Highs in 2026
15 broke
plus 1 tied — daily record highs set this year
Monthly high records this year: Mar (87°F), Jul (112°F)
Record Lows in 2026
2 broke
plus 2 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
75°F
record high minimum — the night it never cooled · Jul 28, 1960
Coldest high ever
-18°F
record low maximum — the day it never warmed · Feb 2, 1989
Month
Warmest low
Coldest high
Jan
41°FJan 11, 1995
-11°FJan 17, 1943
Feb
43°FFeb 21, 2017
-18°FFeb 2, 1989
Mar
49°FMar 20, 2026
0°FMar 3, 1960
Apr
59°FApr 22, 1989
16°FApr 2, 2020
May
65°FMay 18, 1948
32°FMay 1, 1954
Jun
74°FJun 21, 1988
37°FJun 1, 1951
Jul
75°FJul 28, 1960
55°FJul 10, 1951
Aug
73°FAug 1, 1960
51°FAug 24, 1992
Sep
73°FSep 3, 1960
34°FSep 28, 1985
Oct
60°FOct 2, 1957
14°FOct 26, 2020
Nov
52°FNov 25, 1960
-2°FNov 30, 1985
Dec
46°FDec 22, 1964
-15°FDec 29, 1990
All-time
75°FJul 28, 1960
-18°FFeb 2, 1989
Hot Streaks
Current run
0 days
consecutive days with a high ≥ 90°F
Longest ever
22 days
record run, ended Jul 25 1974
So far in 2026
57 days
days with a high ≥ 90°F this year
Climate Normals
Normal high & low by month, from Rapid City's own 1991–2020 record. Today's normal high: 62°F · forecast is +16° vs normal.
Rapid City's observed daily high for the last six weeks — a white ring marks any day that broke or tied its daily record for that date.
2026 So Far
Every day this year against Rapid City's own record — the record high, the normal, and the full span ever seen. A shareable look at where the year stands.