44.523°N, 114.216°W · station LLJthr · 132 years of record
69°F
HOTTEST OCT 17 SINCE 2024
forecast high · Oct 17
7-Day Forecast
NWS NDFD forecast high temperature for Challis.
This Day in History
Every year's high on each of the next 7 forecast dates at Challis — toggle a day below. The forecast line shows where it lands; the ringed bar is the hottest on record.
Ranks
#21 / 106
warmest Oct 17 in 106 yrs of record
Warmest Oct 17 ever
80°F
set in 1926
Coolest Oct 17 ever
43°F
set in 1946
Forecast high 69°F — 21st warmest Oct 17 of 106 years · record 80°F (1926) · warmest since 2024.
Ranks
#33 / 105
warmest Oct 18 in 105 yrs of record
Warmest Oct 18 ever
78°F
set in 1927
Coolest Oct 18 ever
41°F
set in 1982
Forecast high 65°F — 33rd warmest Oct 18 of 105 years · record 78°F (1927) · warmest since 2023.
Ranks
#24 / 105
warmest Oct 19 in 105 yrs of record
Warmest Oct 19 ever
78°F
set in 1927
Coolest Oct 19 ever
34°F
set in 1949
Forecast high 67°F — 24th warmest Oct 19 of 105 years · record 78°F (1927) · warmest since 2023.
Ranks
#55 / 108
warmest Oct 20 in 108 yrs of record
Warmest Oct 20 ever
79°F
set in 2003
Coolest Oct 20 ever
41°F
set in 1984
Forecast high 61°F — 55th warmest Oct 20 of 108 years · record 79°F (2003) · warmest since 2024.
Ranks
#66 / 107
warmest Oct 21 in 107 yrs of record
Warmest Oct 21 ever
78°F
set in 1927
Coolest Oct 21 ever
38°F
set in 1984
Forecast high 59°F — 66th warmest Oct 21 of 107 years · record 78°F (1927) · warmest since 2024.
Ranks
#67 / 106
warmest Oct 22 in 106 yrs of record
Warmest Oct 22 ever
77°F
set in 1927
Coolest Oct 22 ever
40°F
set in 1984
Forecast high 56°F — 67th warmest Oct 22 of 106 years · record 77°F (1927) · warmest since 2025.
Ranks
#79 / 106
warmest Oct 23 in 106 yrs of record
Warmest Oct 23 ever
78°F
set in 1927
Coolest Oct 23 ever
39°F
set in 1975
Forecast high 51°F — 79th warmest Oct 23 of 106 years · record 78°F (1927) · warmest since 2025.
The hottest and coldest ever recorded at Challis in each calendar month, and for the whole 1895–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
60°FJan 1, 1898
-33°FJan 25, 1949
Feb
65°FFeb 26, 1950
-31°FFeb 9, 1933
Mar
75°FMar 19, 2026
-16°FMar 1, 1922
Apr
87°FApr 16, 1915
3°FApr 1, 1936
May
96°FMay 28, 2003
15°FMay 5, 1915
Jun
100°FJun 23, 1992
24°FJun 1, 1920
Jul
103°FJul 26, 1964
31°FJul 2, 1955
Aug
103°FAug 4, 1961
20°FAug 30, 1927
Sep
99°FSep 3, 2022
17°FSep 24, 1926
Oct
89°FOct 14, 1927
-4°FOct 31, 2002
Nov
75°FNov 1, 1937
-17°FNov 24, 1985
Dec
63°FDec 2, 2021
-34°FDec 23, 1983
All-time
103°FAug 4, 1961
-34°FDec 23, 1983
2026 Records So Far
Records set or tied at Challis so far this year — through Oct 15.
Record Highs in 2026
4 broke
plus 4 tied — daily record highs set this year
Monthly high record this year: Mar (75°F)
Record Lows in 2026
0 broke
plus 1 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 · Aug 9, 1928
Coldest high ever
-14°F
record low maximum — the day it never warmed · Dec 22, 1983
Month
Warmest low
Coldest high
Jan
40°FJan 17, 1896
-11°FJan 22, 1930
Feb
41°FFeb 7, 1996
-6°FFeb 9, 1933
Mar
46°FMar 25, 2026
11°FMar 1, 1960
Apr
56°FApr 30, 1992
29°FApr 4, 1918
May
58°FMay 28, 1986
39°FMay 6, 2010
Jun
65°FJun 6, 1926
45°FJun 7, 1924
Jul
70°FJul 23, 2006
58°FJul 5, 1982
Aug
75°FAug 9, 1928
58°FAug 20, 1968
Sep
61°FSep 4, 1945
38°FSep 25, 1934
Oct
55°FOct 9, 1955
14°FOct 31, 2002
Nov
53°FNov 7, 2006
4°FNov 25, 1985
Dec
43°FDec 18, 1917
-14°FDec 22, 1983
All-time
75°FAug 9, 1928
-14°FDec 22, 1983
Hot Streaks
Current run
0 days
consecutive days with a high ≥ 90°F
Longest ever
29 days
record run, ended Aug 2 2018
So far in 2026
35 days
days with a high ≥ 90°F this year
Climate Normals
Normal high & low by month, from Challis's own 1991–2020 record. Today's normal high: 60°F · forecast is +9° vs normal.
Challis'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 Challis's own record — the record high, the normal, and the full span ever seen. A shareable look at where the year stands.