Home / Willmar / 17 September 2018
Willmar
United States · 17 September 2018
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Average
18.3°C
low 13.4°C · high 23.9°C
Rainfall
7.8mm
rain recorded
Wind
3.6m/s
daily average
Humidity
73%
daily average
Cloud
42%
cover
Pressure
1013hPa
daily average
The temperature ranged from 13.4°C around 22:00 to 23.9°C around 00:00. Rain was recorded across 6 hours, from around 02:00 to 23:00 (7.8mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
41th percentile
Low temperature
50th percentile
Rainfall
84th percentile
Wind
44th percentile
A percentile of 100 means this was the hottest/wettest/windiest of the comparable days on file; 50 is right in the middle. This window's average temperature was 18.6°C, versus 18.3°C on this specific day.
Sun & daylight
Sunrise
07:01
Sunset
19:26
Day length
12h 26m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Chicago.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | 23.9°C | 23.6°C | 0.01 | 4.2 | SSW | 69 | 1010 |
| 01:00 | 06:00 | 23.6°C | 23.9°C | 0.03 | 3.2 | SW | 69 | 1010 |
| 02:00 | 07:00 | 22.9°C | 23.9°C | 0.14 | 2.5 | W | 73 | 1011 |
| 03:00 | 08:00 | 21.6°C | 22.4°C | 0 | 2.6 | NW | 77 | 1011 |
| 04:00 | 09:00 | 20.7°C | 21.3°C | 0 | 3.1 | NNW | 84 | 1012 |
| 05:00 | 10:00 | 18.3°C | 17°C | 0 | 4.6 | NNW | 86 | 1012 |
| 06:00 | 11:00 | 17.5°C | 16.1°C | 0 | 4.3 | N | 85 | 1012 |
| 07:00 | 12:00 | 17°C | 16.2°C | 0 | 3 | N | 84 | 1013 |
| 08:00 | 13:00 | 17°C | 15.6°C | 0 | 3.9 | N | 82 | 1014 |
| 09:00 | 14:00 | 17.7°C | 15.5°C | 0 | 4.7 | N | 77 | 1013 |
| 10:00 | 15:00 | 19.5°C | 16.9°C | 0 | 4.5 | N | 61 | 1013 |
| 11:00 | 16:00 | 20.7°C | 18.3°C | 0 | 4.5 | N | 59 | 1014 |
| 12:00 | 17:00 | 20.4°C | 18.2°C | 0.02 | 3.8 | N | 56 | 1016 |
| 13:00 | 18:00 | 20.1°C | 17.4°C | 0 | 4.3 | N | 56 | 1016 |
| 14:00 | 19:00 | 19.1°C | 16.2°C | 3.17 | 4.7 | NE | 60 | 1016 |
| 15:00 | 20:00 | 17.2°C | 13.4°C | 1.61 | 6 | ENE | 69 | 1014 |
| 16:00 | 21:00 | 15.8°C | 12.8°C | 1.23 | 4.5 | E | 70 | 1014 |
| 17:00 | 22:00 | 15.8°C | 14.3°C | 0.48 | 2.8 | ENE | 76 | 1013 |
| 18:00 | 23:00 | 15.9°C | 14.5°C | 0.01 | 2.5 | N | 71 | 1013 |
| 19:00 | 00:00 | 16°C | 14.1°C | 0 | 3.1 | N | 71 | 1014 |
| 20:00 | 01:00 | 16.1°C | 14.9°C | 0 | 2.1 | NNE | 71 | 1014 |
| 21:00 | 02:00 | 14.6°C | 13.2°C | 0 | 2.4 | NNE | 77 | 1015 |
| 22:00 | 03:00 | 13.4°C | 11.9°C | 0.01 | 2.6 | NE | 86 | 1015 |
| 23:00 | 04:00 | 13.8°C | 12.4°C | 1.04 | 2.5 | NE | 85 | 1016 |
Nearby cities
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Data 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
- Willmar — 45.000°, -95.000°, ERA5 grid cell center, 14.0 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 17 September 2018 specifically — not a monthly average. See the Willmar climate overview for typical conditions.
- 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 (2026-07-19). Historical climate data for Willmar, United States (45.00°N, 95.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Willmar, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 19, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Willmar, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 19, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Willmar, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-19},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.