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Gainesville climate
Typical historical weather for Gainesville, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.
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Annual average
18.6°C
across all months
Warmest month
34.7°C
Jul average high
Coolest month
1.4°C
Jan average low
Annual rainfall
946mm
total per year
Gainesville is typically hottest in July and coolest in January, a swing of about 33.3°C across the year. About 37% of annual rainfall falls in the three wettest months (May is typically wettest, January driest).
Monthly averages
Average daily high/low temperature (band) and monthly rainfall (bars).
| Month | Avg high | Avg low | Rainfall | Wet days | Humidity | Wind | Cloud | Solar |
|---|---|---|---|---|---|---|---|---|
| Jan | 12.3°C · record 18.4–25.9°C | 1.4°C · record -14–-1.9°C | 47mm | 7 | 63% | 3.5 m/s | 45% | 3 kWh/m² |
| Feb | 14.9°C · record 24.2–32.9°C | 3.6°C · record -20.5–-0.6°C | 69mm | 8 | 65% | 3.7 m/s | 53% | 3.6 kWh/m² |
| Mar | 20.4°C · record 26–31.8°C | 9.2°C · record -7.5–4°C | 91mm | 8 | 61% | 4 m/s | 49% | 4.8 kWh/m² |
| Apr | 23.3°C · record 28.6–34.9°C | 12.4°C · record -1.1–5.9°C | 121mm | 9 | 64% | 4.1 m/s | 52% | 5.5 kWh/m² |
| May | 27.7°C · record 30.7–36°C | 17.8°C · record 6.9–15.1°C | 126mm | 12 | 69% | 3.6 m/s | 55% | 5.9 kWh/m² |
| Jun | 32.3°C · record 34.8–38.4°C | 22.4°C · record 15.8–19°C | 86mm | 9 | 68% | 3.2 m/s | 46% | 6.7 kWh/m² |
| Jul | 34.7°C · record 35.6–43.3°C | 24.2°C · record 17.8–21.5°C | 47mm | 7 | 63% | 3 m/s | 41% | 6.9 kWh/m² |
| Aug | 34.3°C · record 35.2–42.5°C | 23.9°C · record 18.5–22.6°C | 69mm | 8 | 62% | 2.9 m/s | 42% | 6.2 kWh/m² |
| Sep | 31.1°C · record 33.4–41.9°C | 20.1°C · record 9.5–21.2°C | 71mm | 7 | 65% | 2.8 m/s | 38% | 5.2 kWh/m² |
| Oct | 25.5°C · record 31.2–35°C | 13.9°C · record -2.1–8.9°C | 105mm | 7 | 62% | 3.4 m/s | 34% | 4.2 kWh/m² |
| Nov | 18.9°C · record 24.1–31.1°C | 7.7°C · record -6.4–0.7°C | 63mm | 7 | 67% | 3.4 m/s | 41% | 3.1 kWh/m² |
| Dec | 14.7°C · record 20.1–28.1°C | 4.2°C · record -13.5–-2.2°C | 52mm | 6 | 65% | 3.4 m/s | 50% | 2.6 kWh/m² |
"Avg high"/"Avg low" is the mean daily high/low for that month, averaged across every year on file. The "record" figure alongside it is a different statistic — the single hottest (or coldest) hour ever recorded during that month across all years — so it can sit above or below the average and does not describe the average's year-to-year spread. A "wet day" is any day with at least 1.0mm of rain.
Year to year
Annual average temperature, 2016–2025.
Across these 10 years, the annual average has moved by about +0.71°C per decade. That’s a short window for a reliable long-term climate trend — treat it as indicative, not definitive.
Annual rainfall has moved by about -140.47mm per decade over the same period.
2025 (the most recent year on file) averaged 18.865292358398456°C, above the 9-year baseline of 18.63°C by 0.44 standard deviations.
Typical extremes per year
Rainy days
93.5 days
≥1.0mm rain
Heavy rain days
12.9 days
≥20mm rain
Extreme heat days
2.7 days
daily high ≥40°C
Frost days
30.1 days
daily low ≤0°C
Averaged across 10 years on file. Thresholds match PastClimate's data pipeline definitions — see data & sources.
Records on file
Ranked across 10 years of data currently on file (2016–2025).
Hottest day
43.3°C
19 July 2022
2022 was 0.21 SD below the 9-year average that year
Coldest day
-20.5°C
16 February 2021
2021 was 0.87 SD below the 9-year average that year
Wettest day
106.4mm
22 September 2018
2018 was 1.16 SD below the 9-year average that year
Windiest day
8.6m/s
28 October 2021
2021 was 0.87 SD below the 9-year average that year
See the detail: Gainesville on 22 September 2018.
Nearby cities
Whitesboro
23.1 km away
Pilot Point
36.2 km away
Marietta
36.1 km away
Nocona
46.2 km away
Pottsboro
46.2 km away
Montague
46.2 km away
Want a side-by-side view instead? Compare Gainesville with another city.
Frequently asked questions about Gainesville's climate
What is the hottest month in Gainesville?
July is typically the warmest month in Gainesville, with an average high of 34.7°C. January is typically the coolest, averaging 1.4°C overnight.
How much does it rain in Gainesville?
Gainesville gets about 946mm of rain a year on average, with roughly 37% of it falling in the three wettest months (May is typically the wettest, January the driest).
How many extremely hot or cold days does Gainesville have?
On average, Gainesville sees about 2.7 day(s) a year at or above 40°C and about 30.1 day(s) at or below 0°C, based on 10 years of data.
Is Gainesville getting warmer?
Across the 10 years on file (2016–2025), the annual average temperature has moved by about +0.71°C per decade. That's a short window for a reliable long-term climate trend — treat it as indicative, not definitive.
What is the hottest day on record for Gainesville?
The hottest day on file is 19 July 2022 at 43.3°C, out of 10 year(s) searched.
Data & provenance
↓ Download monthly CSVData source & coverage — ERA5 reanalysis, 2016–2025 (10 years)details
- Source
- ERA5 reanalysis, accessed via the Copernicus Climate Change Service (C3S) Climate Data Store
- Data type
- Reanalysis — a physically consistent reconstruction combining a forecast model with historical observations, not a live station reading or a forecast
- Coverage
- 2016–2025 (10 years) for United States
- Location
- Gainesville — 33.750°, -97.250°, ERA5 grid cell center, 17.5 km from requested point
- Time zone
- America/Chicago
- What's shown here
- Monthly and annual averages, and dated extreme-value records, derived from an hourly base record.
- Spatial resolution
- 0.25° (~25 km) distributed grid — ERA5's native model resolution is finer; this is the publicly distributed regridded product
- Version / refreshed
- Methodology v2026.07 · data last refreshed December 31, 2025
- Limitations
- A model reconstruction, not a station observation — hyper-local extremes (a single storm cell, an urban heat pocket) can differ from a nearby gauge. See the full methodology.
- Attribution
- Generated using Copernicus Climate Change Service information
Cite this data
PastClimate (2026-07-18). Historical climate data for Gainesville, United States (33.75°N, 97.25°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Gainesville, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Gainesville, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 18, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Gainesville, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-18},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.