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Waterville climate
Typical historical weather for Waterville, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.
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Annual average
9.2°C
across all months
Warmest month
29.6°C
Jul average high
Coolest month
-5.1°C
Jan average low
Annual rainfall
485mm
total per year
Waterville is typically hottest in July and coolest in January, a swing of about 34.7°C across the year. About 51% of annual rainfall falls in the three wettest months (December is typically wettest, July 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 | 0.1°C · record 1.8–7.2°C | -5.1°C · record -23.5–-5.4°C | 86mm | 14 | 89% | 1.3 m/s | 81% | 1.4 kWh/m² |
| Feb | 2.7°C · record 3.8–12.9°C | -4.1°C · record -22.8–-5.2°C | 53mm | 11 | 77% | 1.7 m/s | 65% | 2.6 kWh/m² |
| Mar | 8.6°C · record 12.6–20.3°C | -0.6°C · record -14.7–-3°C | 47mm | 10 | 67% | 1.9 m/s | 61% | 4 kWh/m² |
| Apr | 14.1°C · record 15.1–27.8°C | 3.1°C · record -4.2–1.6°C | 30mm | 6 | 55% | 2.2 m/s | 55% | 5.6 kWh/m² |
| May | 20.4°C · record 21.6–30.6°C | 8°C · record 0–5.2°C | 21mm | 6 | 49% | 2.3 m/s | 49% | 6.8 kWh/m² |
| Jun | 24.4°C · record 30–42.6°C | 11.3°C · record 4–6.9°C | 12mm | 3 | 44% | 2.4 m/s | 43% | 7.6 kWh/m² |
| Jul | 29.6°C · record 33.3–40.5°C | 14.4°C · record 8.7–11.6°C | 5mm | 1 | 41% | 2.4 m/s | 21% | 7.9 kWh/m² |
| Aug | 28.7°C · record 33.5–38.5°C | 14.4°C · record 5.5–10.8°C | 7mm | 2 | 45% | 2.2 m/s | 29% | 6.6 kWh/m² |
| Sep | 22.5°C · record 27.4–35.3°C | 10.6°C · record 1.8–5.5°C | 16mm | 3 | 55% | 1.9 m/s | 40% | 4.8 kWh/m² |
| Oct | 13.4°C · record 18.1–26.2°C | 4.2°C · record -7.8–0.9°C | 47mm | 8 | 70% | 1.7 m/s | 52% | 3 kWh/m² |
| Nov | 5.4°C · record 9.6–15.5°C | -0.6°C · record -13.1–-1.4°C | 72mm | 13 | 84% | 1.5 m/s | 73% | 1.6 kWh/m² |
| Dec | 0.2°C · record 3.7–14°C | -4.3°C · record -19.1–-6.3°C | 90mm | 14 | 87% | 1.3 m/s | 79% | 1.1 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 +0.44°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 -40.89mm per decade over the same period.
2025 (the most recent year on file) averaged 9.743646120045307°C, above the 9-year baseline of 9.21°C by 1.02 standard deviations.
Typical extremes per year
Rainy days
89.7 days
≥1.0mm rain
Heavy rain days
1.3 days
≥20mm rain
Extreme heat days
0.3 days
daily high ≥40°C
Frost days
121.7 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
42.6°C
29 June 2021
2021 was 0.92 SD above the 9-year average that year
Coldest day
-23.5°C
13 January 2024
2024 was 0.6 SD above the 9-year average that year
Wettest day
42.1mm
10 December 2025
2025 was 1.02 SD above the 9-year average that year
Windiest day
5m/s
4 April 2022
2022 was 2.19 SD below the 9-year average that year
See the detail: Waterville on 10 December 2025.
Nearby cities
Chelan
Same ERA5 grid cell
Wenatchee
33.5 km away
East Wenatchee
33.5 km away
East Wenatchee Bench
33.5 km away
Sunnyslope
33.5 km away
Granite Falls
33.5 km away
Want a side-by-side view instead? Compare Waterville with another city.
Frequently asked questions about Waterville's climate
What is the hottest month in Waterville?
July is typically the warmest month in Waterville, with an average high of 29.6°C. January is typically the coolest, averaging -5.1°C overnight.
How much does it rain in Waterville?
Waterville gets about 485mm of rain a year on average, with roughly 51% of it falling in the three wettest months (December is typically the wettest, July the driest).
How many extremely hot or cold days does Waterville have?
On average, Waterville sees about 0.3 day(s) a year at or above 40°C and about 121.7 day(s) at or below 0°C, based on 10 years of data.
Is Waterville getting warmer?
Across the 10 years on file (2016–2025), the annual average temperature has moved by about +0.44°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 Waterville?
The hottest day on file is 29 June 2021 at 42.6°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
- Waterville — 47.750°, -120.000°, ERA5 grid cell center, 12.6 km from requested point
- Time zone
- America/Los_Angeles
- 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 Waterville, United States (47.75°N, 120.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Waterville, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Waterville, 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 Waterville, 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.