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Has the climate in Rocky River changed?

Rocky River has warmed about 1°F since 1998.

About 0.3°F per decade, measured from Rocky River's official daily weather records, 1998–2025. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Rocky River's climate has warmed more slowly than most other cities in United States.

What has actually changed

Each card compares the 1970s (the first ten years of the record) with recent years (the last ten) — the same span the headline and the chart use.

Freezing nights
6 fewer nights
1970s
85 / yr
Recent
79 / yr
Milder winters — fewer frosts
Average temperature
+0.7°F
1970s
53.5°F
Recent
54.2°F
A steady upward drift
Hot days above 90°F
about the same
1970s
8 / yr
Recent
8 / yr
About the same number of heat days
Rainy days
about the same
1970s
135 / yr
Recent
133 / yr
Rainfall pattern about the same

Rocky River's temperature, year by year

Average temperature for each year from 1998 to 2025.

48°50°52°54°56°58°1998: 57.2°F1999: 53.4°F2000: 51.8°F2001: 53.1°F2002: 53.3°F2003: 50.4°F2004: 55.0°F2005: 53.9°F2006: 53.7°F2007: 53.6°F2008: 52.2°F2009: 52.2°F2010: 53.0°F2011: 53.1°F2012: 55.1°F2013: 53.0°F2014: 49.7°F2015: 52.4°F2016: 55.0°F2017: 53.8°F2018: 52.4°F2019: 53.0°F2020: 54.6°F2021: 55.6°F2022: 53.7°F2023: 55.1°F2024: 57.4°F2025: 52.4°Flong-term trend19982000201020202025
a warmer-than-average year a cooler-than-average year

Each bar is one year. Most recent years sit above the older ones. Some recent years still came in cool — warming is a slope, not a straight climb.

In day-to-day terms, that long-term shift shows up as about 12 more freezing nights a year and about 3 more days above 90°F compared with the 1970s.

When in the year the change shows up

How much warmer each month is now than in the 1970s. Useful if you garden or care about a particular season — otherwise the headline above already has the answer.

-4.5°-4.0°-3.5°-3.0°-2.5°-2.0°-1.5°-1.0°-0.5°0.0°+0.5°+1.0°+1.5°+2.0°January: +1.2°F+1.2JFebruary: -4.3°F-4.3FMarch: -2.2°F-2.2MApril: +0.5°F+0.5AMay: -1.8°F-1.8MJune: +0.0°F+0.0JJuly: +0.4°F+0.4JAugust: +1.4°F+1.4ASeptember: -0.2°F-0.2SOctober: +0.0°F+0.0ONovember: -1.2°F-1.2NDecember: +1.8°F+1.8D

February has cooled the most — about 4.4°F. The warming runs across the whole year, not just one season.

Methodology & sources

Temperature — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Cleveland Burke Lakefront AP (NOAA GHCN station USW00004853), about 15 km from the city centre.

How we build these numbers →