Eureka, CA
California · Records since 1886–2026
⛅ 62°F
Currently in Eureka
As of 6:00 PM PDT
Records for July 28
🔥 Record High
77°F
July 28, 2015
+13° from 64° normal❄ Record Low
48°F
July 28, 1986
-5° from 53° normal
🌞 Normal high: 64°F 🌑 Normal low: 53°F 1991–2020 normals
All-Time Records — Eureka
87°F
Hottest Day Ever
Sep 28, 2020
20°F
Coldest Day Ever
Jan 14, 1888
6.79"
Wettest Day Ever
Dec 27, 2002
3.4"
Most Snow in One Day
Jan 13, 1907
Top 10 Record Highs — July 28
| # | Temp | Date |
|---|---|---|
| 🏆 | 77°F | July 28, 2015 |
| 2 | 69°F | July 28, 2000 |
| 3 | 69°F | July 28, 1987 |
| 4 | 68°F | July 28, 2007 |
| 5 | 68°F | July 28, 1983 |
| 6 | 66°F | July 28, 2022 |
| 7 | 66°F | July 28, 1998 |
| 8 | 66°F | July 28, 1895 |
| 9 | 65°F | July 28, 2025 |
| 10 | 65°F | July 28, 2011 |
Top 5 Record Lows — July 28
| # | Temp | Date |
|---|---|---|
| 🥶 | 48°F | July 28, 1986 |
| 2 | 48°F | July 28, 1959 |
| 3 | 48°F | July 28, 1954 |
| 4 | 48°F | July 28, 1927 |
| 5 | 48°F | July 28, 1897 |
Heat Wave Summary — Eureka
threshold: 66°F (90th percentile of historical Jun–Aug highs)4.6
Avg heat wave length
days (historical)
72°
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
97 of 207 days with data were above the 1991–2020 normal high for their date.
Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Eureka
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Aug 20, 1997 – Sep 22, 1997 | 34 | 75°F (Sep 13) | 71°F | 56°F |
| 2 | Aug 22, 1979 – Sep 15, 1979 | 25 | 85°F (Sep 12) | 70°F | 57°F |
| 3 | Aug 3, 1994 – Aug 25, 1994 | 23 | 69°F (Aug 10) | 67°F | 56°F |
| 4 | Sep 5, 2019 – Sep 25, 2019 | 21 | 76°F (Sep 15) | 69°F | 55°F |
| 5 | Sep 14, 2020 – Sep 29, 2020 | 16 | 87°F (Sep 28) | 71°F | 55°F |
| 6 | Aug 1, 1983 – Aug 15, 1983 | 15 | 76°F (Aug 12) | 69°F | 56°F |
| 7 | Jul 12, 2007 – Jul 24, 2007 | 13 | 74°F (Jul 21) | 70°F | 57°F |
| 8 | Aug 4, 2003 – Aug 16, 2003 | 13 | 71°F (Aug 8) | 70°F | 55°F |
| 9 | Aug 23, 2019 – Sep 3, 2019 | 12 | 73°F (Aug 29) | 69°F | 55°F |
| 10 | Jul 23, 2015 – Aug 2, 2015 | 11 | 77°F (Jul 28) | 69°F | 55°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
28
2026 so far
above-normal nights
45.6
Avg / summer
1970–2020
76
Most in a summer
2004
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
16.28"
2026 YTD
Normal: 24.22"
-7.94"
0.01"
July so far
July normal: 0.18"
-0.17"
0.68"
Summer so far
Summer normal: 1.06"
-0.38"
5
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")