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Ellsworth Air Force Base climate
Typical historical weather for Ellsworth Air Force Base, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.
Data last updated: 31 December 2025
Want today's actual conditions instead? See the current forecast for Ellsworth Air Force Base. Planning a garden? See the gardening & growing season planner. Or browse the 365-day climate calendar.
Annual average
9.2°C
across all months
Warmest month
30.7°C
Jul average high
Coolest month
-9.7°C
Feb average low
Annual rainfall
451mm
total per year
Ellsworth Air Force Base is typically hottest in July and coolest in February, a swing of about 40.4°C across the year. About 43% 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 | 2.2°C · record 9.7°C–17.3°C | -8.5°C · record -29.7°C–-12.2°C | 13mm | 4 | 65% | 4 m/s | 52% | 2.1 kWh/m² |
| Feb | 2°C · record 7.7°C–21.9°C | -9.7°C · record -28.1°C–-8°C | 20mm | 6 | 62% | 3.9 m/s | 52% | 3.3 kWh/m² |
| Mar | 8.8°C · record 17.7°C–24.3°C | -3.7°C · record -28.4°C–-6.8°C | 30mm | 7 | 62% | 4.2 m/s | 55% | 4.5 kWh/m² |
| Apr | 13.7°C · record 25.2°C–30.7°C | 0.7°C · record -15.2°C–-3.5°C | 61mm | 9 | 58% | 4.7 m/s | 55% | 5.7 kWh/m² |
| May | 19.7°C · record 28°C–35.3°C | 7.5°C · record -3.5°C–3.4°C | 78mm | 12 | 62% | 4.1 m/s | 54% | 6.2 kWh/m² |
| Jun | 27.2°C · record 31.2°C–38.6°C | 13.7°C · record 3.9°C–9.7°C | 54mm | 9 | 57% | 3.8 m/s | 42% | 7.2 kWh/m² |
| Jul | 30.7°C · record 33.1°C–40.7°C | 16.7°C · record 10°C–13.9°C | 55mm | 8 | 57% | 3.3 m/s | 36% | 7.1 kWh/m² |
| Aug | 29.4°C · record 33.5°C–39.3°C | 15.2°C · record 6.8°C–10.4°C | 37mm | 6 | 57% | 3.4 m/s | 36% | 6.3 kWh/m² |
| Sep | 25.4°C · record 31.6°C–38.8°C | 11°C · record -1.3°C–7.2°C | 29mm | 5 | 56% | 3.7 m/s | 37% | 4.9 kWh/m² |
| Oct | 16°C · record 24.4°C–35°C | 2.9°C · record -17.9°C–-1.4°C | 37mm | 6 | 57% | 4.2 m/s | 40% | 3.4 kWh/m² |
| Nov | 9.7°C · record 18°C–26.3°C | -2.8°C · record -16.8°C–-9.1°C | 14mm | 3 | 60% | 3.9 m/s | 47% | 2.3 kWh/m² |
| Dec | 3.5°C · record 9.4°C–22.7°C | -7.7°C · record -32.6°C–-10.7°C | 24mm | 6 | 63% | 4.2 m/s | 52% | 1.8 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 +0.8°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 -62.19mm per decade over the same period.
2025 (the most recent year on file) averaged 9.8°C, above the 9-year baseline of 9.2°C by 0.5 standard deviations.
Typical extremes per year
Rainy days
78.9 days
≥1.0mm rain
Heavy rain days
3 days
≥20mm rain
Extreme heat days
0.1 days
daily high ≥40°C
Frost days
150.8 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
40.7°C
25 July 2024
2024 was 0.81 SD above the 9-year average that year
Coldest day
-32.6°C
17 December 2016
2016 was 1.01 SD above the 9-year average that year
Wettest day
48.5mm
20 July 2019
2019 was 3.61 SD below the 9-year average that year
Windiest day
14.4m/s
14 January 2021
2021 was 0.98 SD above the 9-year average that year
See the detail: Ellsworth Air Force Base on 20 July 2019.
Nearby cities
Frequently asked questions about Ellsworth Air Force Base's climate
What is the hottest month in Ellsworth Air Force Base?
July is typically the warmest month in Ellsworth Air Force Base, with an average high of 30.7°C. February is typically the coolest, averaging -9.7°C overnight.
How much does it rain in Ellsworth Air Force Base?
Ellsworth Air Force Base gets about 451mm of rain a year on average, with roughly 43% of it falling in the three wettest months (May is typically the wettest, January the driest).
How many extremely hot or cold days does Ellsworth Air Force Base have?
On average, Ellsworth Air Force Base sees about 0.1 day(s) a year at or above 40°C and about 150.8 day(s) at or below 0°C, based on 10 years of data.
Is Ellsworth Air Force Base getting warmer?
Across the 10 years on file (2016–2025), the annual average temperature has moved by about +0.79°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 Ellsworth Air Force Base?
The hottest day on file is 25 July 2024 at 40.7°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
- Ellsworth Air Force Base — 44.250°, -103.000°, ERA5 grid cell center, 13.2 km from requested point
- Time zone
- America/Denver
- 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 (2026-07-20). Historical climate data for Ellsworth Air Force Base, United States (44.25°N, 103.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Ellsworth Air Force Base, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Ellsworth Air Force Base, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 20, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Ellsworth Air Force Base, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-20},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.