Jerome, ID
Idaho · Records since 1915–2026
☀️ 90°F
Feels like 87°
Currently in Jerome
As of 7:00 PM MDT
Records for July 28
🔥 Record High
108°F
July 28, 1934
+17° from 91° normal❄ Record Low
41°F
July 28, 2015
-19° from 60° normal
🌞 Normal high: 91°F 🌑 Normal low: 60°F 1991–2020 normals
All-Time Records — Jerome
110°F
Hottest Day Ever
Jun 19, 1940
-25°F
Coldest Day Ever
Jan 21, 1937
2.08"
Wettest Day Ever
Apr 8, 2009
8.0"
Most Snow in One Day
Feb 2, 1916
Top 10 Record Highs — July 28
| # | Temp | Date |
|---|---|---|
| 🏆 | 108°F | July 28, 1934 |
| 2 | 105°F | July 28, 1996 |
| 3 | 105°F | July 28, 1994 |
| 4 | 103°F | July 28, 1968 |
| 5 | 101°F | July 28, 1946 |
| 6 | 101°F | July 28, 1933 |
| 7 | 100°F | July 28, 1992 |
| 8 | 100°F | July 28, 1925 |
| 9 | 99°F | July 28, 1981 |
| 10 | 99°F | July 28, 1974 |
Top 5 Record Lows — July 28
| # | Temp | Date |
|---|---|---|
| 🥶 | 41°F | July 28, 2015 |
| 2 | 43°F | July 28, 1949 |
| 3 | 43°F | July 28, 1948 |
| 4 | 44°F | July 28, 1918 |
| 5 | 46°F | July 28, 1993 |
Heat Wave Summary — Jerome
threshold: 97°F (90th percentile of historical Jun–Aug highs)4.5
Avg heat wave length
days (historical)
101°
Avg peak temp
during heat waves
4
Dangerous nights 2026
Overnights ≥ 70°F
0
Heat waves 2026
so far
2026 Daily High Temperature vs Normal
Year to date
Above normal
Below normal
137 of 207 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1916–202622
2026 so far
46
Avg/year 1970–2025
46
Avg/year (last 10 complete)
76
Most in a year (1940)
Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Jerome
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 17, 1931 – Jul 28, 1931 | 12 | 106°F (Jul 20) | 101°F | 65°F |
| 2 | Aug 10, 1967 – Aug 21, 1967 | 12 | 100°F (Aug 12) | 99°F | 59°F |
| 3 | Jul 2, 1985 – Jul 12, 1985 | 11 | 103°F (Jul 7) | 100°F | 62°F |
| 4 | Jul 27, 1969 – Aug 5, 1969 | 10 | 103°F (Jul 27) | 98°F | 58°F |
| 5 | Jul 14, 1936 – Jul 22, 1936 | 9 | 105°F (Jul 18) | 100°F | 65°F |
| 6 | Jul 14, 1960 – Jul 22, 1960 | 9 | 103°F (Jul 19) | 99°F | 59°F |
| 7 | Jun 17, 1961 – Jun 25, 1961 | 9 | 100°F (Jun 20) | 99°F | 57°F |
| 8 | Jul 21, 1988 – Jul 28, 1988 | 8 | 105°F (Jul 22) | 99°F | 61°F |
| 9 | Jun 27, 2015 – Jul 4, 2015 | 8 | 103°F (Jun 28) | 99°F | 66°F |
| 10 | Jul 16, 1959 – Jul 23, 1959 | 8 | 102°F (Jul 17) | 100°F | 58°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
34
2026 so far
above-normal nights
31.8
Avg / summer
1970–2020
65
Most in a summer
2022
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
2.94"
2026 YTD
Normal: 6.23"
-3.29"
0.01"
July so far
July normal: 0.11"
-0.10"
0.41"
Summer so far
Summer normal: 1.00"
-0.59"
0
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")