Challis, ID
Idaho · Records since 1895–2026
🌤️ 89°F
Feels like 80°
Currently in Challis
As of 7:00 PM MDT
Records for July 28
🔥 Record High
99°F
July 28, 2006
+10° from 89° normal❄ Record Low
37°F
July 28, 1948
-16° from 53° normal
🌞 Normal high: 89°F 🌑 Normal low: 53°F 1991–2020 normals
All-Time Records — Challis
103°F
Hottest Day Ever
Jul 12, 2002
-34°F
Coldest Day Ever
Dec 22, 1990
1.85"
Wettest Day Ever
Jul 10, 1983
11.0"
Most Snow in One Day
Nov 8, 1985
Top 10 Record Highs — July 28
| # | Temp | Date |
|---|---|---|
| 🏆 | 99°F | July 28, 2006 |
| 2 | 98°F | July 28, 1934 |
| 3 | 96°F | July 28, 1899 |
| 4 | 95°F | July 28, 2022 |
| 5 | 95°F | July 28, 2016 |
| 6 | 95°F | July 28, 2000 |
| 7 | 95°F | July 28, 1995 |
| 8 | 95°F | July 28, 1968 |
| 9 | 94°F | July 28, 2018 |
| 10 | 94°F | July 28, 1980 |
Top 5 Record Lows — July 28
| # | Temp | Date |
|---|---|---|
| 🥶 | 37°F | July 28, 1948 |
| 2 | 38°F | July 28, 2015 |
| 3 | 40°F | July 28, 1918 |
| 4 | 40°F | July 28, 1900 |
| 5 | 41°F | July 28, 1951 |
Heat Wave Summary — Challis
threshold: 92°F (90th percentile of historical Jun–Aug highs)5.0
Avg heat wave length
days (historical)
97°
Avg peak temp
during heat waves
0
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far
2026 Daily High Temperature vs Normal
Year to date
Above normal
Below normal
155 of 207 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1897–202617
2026 so far
20
Avg/year 1970–2025
36
Avg/year (last 10 complete)
50
Most in a year (2021)
Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Challis
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 5, 2018 – Aug 2, 2018 | 29 | 99°F (Jul 9) | 95°F | 55°F |
| 2 | Jul 15, 1959 – Jul 27, 1959 | 13 | 101°F (Jul 23) | 95°F | 56°F |
| 3 | Jul 15, 1966 – Jul 27, 1966 | 13 | 98°F (Jul 20) | 95°F | 50°F |
| 4 | Jul 14, 1960 – Jul 24, 1960 | 11 | 102°F (Jul 20) | 98°F | 53°F |
| 5 | Jul 14, 2006 – Jul 23, 2006 | 10 | 101°F (Jul 22) | 97°F | 55°F |
| 6 | Jul 14, 2003 – Jul 23, 2003 | 10 | 100°F (Jul 20) | 97°F | 55°F |
| 7 | Aug 7, 2018 – Aug 15, 2018 | 9 | 102°F (Aug 10) | 96°F | 53°F |
| 8 | Jun 26, 2015 – Jul 4, 2015 | 9 | 100°F (Jun 28) | 97°F | 57°F |
| 9 | Jul 25, 2000 – Aug 2, 2000 | 9 | 99°F (Aug 1) | 95°F | 55°F |
| 10 | Aug 30, 2022 – Sep 7, 2022 | 9 | 99°F (Sep 3) | 96°F | 50°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
29
2026 so far
above-normal nights
38.0
Avg / summer
1970–2020
67
Most in a summer
2021
Above-Normal Summer Nights Per Year
Average June–August Low by Decade
Overnight lows · complete decades only
Precipitation
Actual vs. 1991–2020 full-month and full-season normals
3.70"
2026 YTD
Normal: 3.96"
-0.26"
0.50"
July so far
July normal: 0.42"
+0.08"
2.45"
Summer so far
Summer normal: 1.80"
+0.65"
1
2026 heavy rain days
Days with ≥ 1.0"
Monthly Precipitation — Last 24 Months
Blue = actual · dashed line = monthly normal
Annual Precipitation Per Year (1970–2026)
Blue = above average · tan = below average · gold = 2026 (partial)
Heavy Rain Days Per Year (≥ 1.0")
Compare year-to-year changes in days with heavy rainfall (≥ 1.0")