Jamestown, NY
New York · Records since 1895–2026
Records for August 11
🔥 Record High
August 11, 1940
+15° from 80° normal❄ Record Low
August 11, 1987
-12° from 57° normalAll-Time Records — Jamestown
Top 10 Record Highs — August 11
| # | Temp | Date |
|---|---|---|
| 🏆 | 95°F | August 11, 1940 |
| 2 | 93°F | August 11, 1944 |
| 3 | 90°F | August 11, 2025 |
| 4 | 90°F | August 11, 1949 |
| 5 | 90°F | August 11, 1947 |
| 6 | 89°F | August 11, 2020 |
| 7 | 89°F | August 11, 1923 |
| 8 | 89°F | August 11, 1918 |
| 9 | 89°F | August 11, 1905 |
| 10 | 88°F | August 11, 2016 |
Top 5 Record Lows — August 11
| # | Temp | Date |
|---|---|---|
| 🥶 | 45°F | August 11, 1987 |
| 2 | 46°F | August 11, 1999 |
| 3 | 47°F | August 11, 1982 |
| 4 | 48°F | August 11, 1986 |
| 5 | 48°F | August 11, 1974 |
Heat Wave Summary — Jamestown
threshold: 88°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date108 of 221 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1897–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Jamestown
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Aug 26, 1953 – Sep 4, 1953 | 10 | 98°F (Sep 2) | 93°F | 63°F |
| 2 | Jul 18, 1934 – Jul 27, 1934 | 10 | 97°F (Jul 24) | 92°F | 61°F |
| 3 | Jul 7, 1936 – Jul 15, 1936 | 9 | 100°F (Jul 9) | 96°F | 65°F |
| 4 | Jul 23, 1941 – Jul 31, 1941 | 9 | 97°F (Jul 27) | 93°F | 67°F |
| 5 | Jun 18, 1923 – Jun 26, 1923 | 9 | 94°F (Jun 24) | 91°F | 63°F |
| 6 | Aug 9, 1944 – Aug 17, 1944 | 9 | 93°F (Aug 10) | 92°F | 66°F |
| 7 | May 31, 1934 – Jun 7, 1934 | 8 | 98°F (Jun 2) | 93°F | 63°F |
| 8 | Jul 18, 2011 – Jul 25, 2011 | 8 | 98°F (Jul 23) | 92°F | 66°F |
| 9 | Jul 30, 1955 – Aug 6, 1955 | 8 | 95°F (Jul 31) | 92°F | 68°F |
| 10 | Jun 2, 1925 – Jun 9, 1925 | 8 | 93°F (Jun 2) | 91°F | 66°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
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
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")
Month in Review — July 2026
Average temperature · July 2026
59th-warmest month on record
39th-warmest July of 94 on record
+1.6° vs. 68.5° average (1991–2020)Longest 90°F Streak in July
4 consecutive days with highs of at least 90°F (Jul 1–4, 2026, peaking at 93°F)
The longest July streak since 2020 (6 years). The July record is 8 days, set in 1936.
Average July Temperature by Year
1896–2026 · 2026 highlighted
Warmest Julys on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 1955 | 75.7°F |
| 2 | 1935 | 74.5°F |
| 3 | 1931 | 74.3°F |
| 4 | 1949 | 74.2°F |
| 5 | 1934 | 74.1°F |
| 6 | 1952 | 73.9°F |
| 7 | 2020 | 73.1°F |
| 8 | 2025 | 72.9°F |
| 9 | 1941 | 72.7°F |
| 10 | 1989 | 71.9°F |
Warmest Months on Record (Any Month)
| # | Month | Avg Temp |
|---|---|---|
| 1 | July 1955 | 75.7°F |
| 2 | August 1947 | 74.6°F |
| 3 | July 1935 | 74.5°F |
| 4 | July 1931 | 74.3°F |
| 5 | July 1949 | 74.2°F |
| 6 | July 1934 | 74.1°F |
| 7 | August 1959 | 73.9°F |
| 8 | July 1952 | 73.9°F |
| 9 | August 1955 | 73.8°F |
| 10 | June 1934 | 73.2°F |
Nearby Stations — July 2026
How the same month ranked at the closest reporting stations
| Station | Avg Temp | July Rank |
|---|---|---|
| Jamestown, NY | 70.1°F | 39th of 94 |
| Fredonia, NY | 73.4°F | 23rd of 110 |
| Erie, PA | 73.8°F | 27th of 154 |
| Buffalo, NY | 72.8°F | 31st of 153 |
| Youngstown, OH | 72.4°F | 37th of 98 |