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Warrenton climate
Typical historical weather for Warrenton, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.
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Annual average
14.5°C
across all months
Warmest month
32.3°C
Jul average high
Coolest month
-1.9°C
Jan average low
Annual rainfall
1095mm
total per year
Warrenton is typically hottest in July and coolest in January, a swing of about 34.2°C across the year. About 31% of annual rainfall falls in the three wettest months (May is typically wettest, November 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 | 6.7°C · record 14–24.4°C | -1.9°C · record -16.1–-3.5°C | 86mm | 9 | 64% | 2.9 m/s | 56% | 2.3 kWh/m² |
| Feb | 10.2°C · record 18.8–27.8°C | 0.4°C · record -12.1–-4.5°C | 87mm | 11 | 62% | 3 m/s | 61% | 3 kWh/m² |
| Mar | 14.8°C · record 25–28.9°C | 3.6°C · record -7.9–-2.9°C | 73mm | 10 | 57% | 3.2 m/s | 56% | 4.3 kWh/m² |
| Apr | 20.1°C · record 25.4–33.3°C | 8.6°C · record -3–1.4°C | 83mm | 10 | 58% | 3.1 m/s | 59% | 5.2 kWh/m² |
| May | 24°C · record 29.6–35.4°C | 13.7°C · record 1.6–8.5°C | 122mm | 14 | 68% | 2.5 m/s | 66% | 5.4 kWh/m² |
| Jun | 29.4°C · record 33.5–37.3°C | 18.5°C · record 7.6–13.6°C | 97mm | 12 | 64% | 2.4 m/s | 60% | 6.3 kWh/m² |
| Jul | 32.3°C · record 35.4–39.2°C | 21.7°C · record 13.5–19.3°C | 118mm | 12 | 66% | 2 m/s | 58% | 6.1 kWh/m² |
| Aug | 30.5°C · record 34–37.8°C | 20.3°C · record 10.4–17.6°C | 94mm | 12 | 70% | 2 m/s | 57% | 5.3 kWh/m² |
| Sep | 26.9°C · record 29–38.5°C | 16.8°C · record 3.8–14°C | 103mm | 10 | 72% | 2.3 m/s | 56% | 4.2 kWh/m² |
| Oct | 21.2°C · record 26.5–35.6°C | 10.2°C · record -0.7–5.5°C | 75mm | 7 | 71% | 2.6 m/s | 49% | 3.5 kWh/m² |
| Nov | 14.2°C · record 22.4–28.1°C | 3.4°C · record -6.1–-3°C | 69mm | 8 | 64% | 2.7 m/s | 48% | 2.6 kWh/m² |
| Dec | 8.8°C · record 15.1–21.2°C | -0.1°C · record -14.6–-4.4°C | 90mm | 9 | 66% | 2.6 m/s | 60% | 2 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 +0.1°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 -231.04mm per decade over the same period.
2025 (the most recent year on file) averaged 14.066603806029738°C, below the 9-year baseline of 14.65°C by 1.58 standard deviations.
Typical extremes per year
Rainy days
123 days
≥1.0mm rain
Heavy rain days
13 days
≥20mm rain
Extreme heat days
0 days
daily high ≥40°C
Frost days
68.1 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
39.2°C
21 July 2019
2019 was 0.32 SD above the 9-year average that year
Coldest day
-16.1°C
7 January 2018
2018 was 1.98 SD below the 9-year average that year
Wettest day
136.8mm
9 July 2022
2022 was 1.08 SD below the 9-year average that year
Windiest day
9.8m/s
2 March 2018
2018 was 1.98 SD below the 9-year average that year
See the detail: Warrenton on 9 July 2022.
Nearby cities
New Baltimore
Same ERA5 grid cell
Centreville
21.7 km away
Manassas
21.7 km away
Linton Hall
21.7 km away
Buckhall
21.7 km away
Sudley
21.7 km away
Want a side-by-side view instead? Compare Warrenton with another city.
Frequently asked questions about Warrenton's climate
What is the hottest month in Warrenton?
July is typically the warmest month in Warrenton, with an average high of 32.3°C. January is typically the coolest, averaging -1.9°C overnight.
How much does it rain in Warrenton?
Warrenton gets about 1095mm of rain a year on average, with roughly 31% of it falling in the three wettest months (May is typically the wettest, November the driest).
How many extremely hot or cold days does Warrenton have?
On average, Warrenton sees about 0 day(s) a year at or above 40°C and about 68.1 day(s) at or below 0°C, based on 10 years of data.
Is Warrenton getting warmer?
Across the 10 years on file (2016–2025), the annual average temperature has moved by about +0.1°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 Warrenton?
The hottest day on file is 21 July 2019 at 39.2°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
- Warrenton — 38.750°, -77.750°, ERA5 grid cell center, 5.7 km from requested point
- Time zone
- America/New_York
- 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 (2026-07-17). Historical climate data for Warrenton, United States (38.75°N, 77.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Warrenton, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Warrenton, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 17, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Warrenton, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-17},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.