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Has the climate in Wylie changed?

Wylie has warmed about 1.9°F since 1977.

About 0.8°F per decade, measured from Wylie's official daily weather records, 1977–2025. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Wylie's climate has warmed faster 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
32 more nights
1970s
1 / yr
Recent
33 / yr
Colder winters — more frosts
Average temperature
+1.2°F
1970s
65.9°F
Recent
67.1°F
A steady upward drift
Hot days above 90°F
95 more days
1970s
3 / yr
Recent
98 / yr
More days of serious heat
Rainy days
16 more days
1970s
80 / yr
Recent
96 / yr
Wetter on average

Wylie's temperature, year by year

Average temperature for each year from 1977 to 2025.

58°60°62°64°66°68°70°72°74°1977: 59.4°F1979: 61.1°F1980: 69.9°F2006: 73.1°F2007: 65.3°F2008: 65.4°F2009: 67.0°F2010: 66.0°F2011: 67.7°F2012: 67.8°F2013: 65.2°F2014: 64.5°F2015: 66.1°F2016: 67.2°F2017: 67.4°F2018: 65.4°F2019: 65.1°F2020: 66.2°F2021: 65.7°F2022: 66.5°F2023: 68.6°F2024: 69.2°F2025: 68.3°Flong-term trend19771980201020202025
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 15 more freezing nights a year and about 45 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.

-6.5°-6.0°-5.5°-5.0°-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°+2.5°+3.0°+3.5°January: +0.3°F+0.3JFebruary: -0.5°F-0.5FMarch: +0.7°F+0.7MApril: +0.2°F+0.2AMay: +2.1°F+2.1MJune: -6.5°F-6.5JJuly: -0.6°F-0.6JAugust: -0.5°F-0.5ASeptember: -1.1°F-1.1SOctober: -1.8°F-1.8ONovember: +3.2°F+3.2NDecember: -1.6°F-1.6D

June has cooled the most — about 6.5°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 Richardson (NOAA GHCN station USC00417588), about 19 km from the city centre.

How we build these numbers →