Home / Willmar / 20 September 2018
Willmar
United States · 20 September 2018
← 19 September 201821 September 2018 →
Average
14.4°C
low 12.7°C · high 18°C
Rainfall
44.6mm
rain recorded
Wind
5.1m/s
daily average
Humidity
97.8%
daily average
Cloud
100%
cover
Pressure
1008hPa
daily average
The temperature ranged from 12.7°C around 04:00 to 18°C around 19:00. Rain was recorded across 19 hours, from around 01:00 to 19:00 (44.6mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
10th percentile
Low temperature
49th percentile
Rainfall
99th percentile
Wind
76th 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 18.2°C, versus 14.4°C on this specific day.
Sun & daylight
Sunrise
07:04
Sunset
19:21
Day length
12h 16m
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 | 13.5°C | 11.3°C | 0.08 | 4.2 | ENE | 94 | 1016 |
| 01:00 | 06:00 | 13.3°C | 11.1°C | 0.1 | 4.1 | NE | 94 | 1016 |
| 02:00 | 07:00 | 13.4°C | 11.1°C | 1.12 | 4.4 | ENE | 95 | 1016 |
| 03:00 | 08:00 | 13°C | 10.5°C | 0.71 | 4.7 | ENE | 97 | 1015 |
| 04:00 | 09:00 | 12.7°C | 10.1°C | 0.82 | 4.6 | NE | 97 | 1015 |
| 05:00 | 10:00 | 13.1°C | 10.2°C | 1.17 | 5.2 | NE | 96 | 1013 |
| 06:00 | 11:00 | 13.1°C | 10.3°C | 1.42 | 5 | ENE | 96 | 1014 |
| 07:00 | 12:00 | 13.1°C | 10.1°C | 2.08 | 5.4 | ENE | 97 | 1014 |
| 08:00 | 13:00 | 13°C | 9.7°C | 1.79 | 5.9 | ENE | 98 | 1013 |
| 09:00 | 14:00 | 13.5°C | 10.1°C | 1.99 | 6.3 | ENE | 99 | 1013 |
| 10:00 | 15:00 | 14.4°C | 11.6°C | 2.19 | 5.7 | ENE | 96 | 1012 |
| 11:00 | 16:00 | 14.8°C | 12.1°C | 3.3 | 5.8 | ENE | 97 | 1011 |
| 12:00 | 17:00 | 15°C | 12.3°C | 3.63 | 6.2 | E | 100 | 1009 |
| 13:00 | 18:00 | 14.5°C | 11.3°C | 6.6 | 6.7 | E | 100 | 1007 |
| 14:00 | 19:00 | 14.8°C | 11.9°C | 1.19 | 6.4 | E | 100 | 1005 |
| 15:00 | 20:00 | 14.3°C | 10.7°C | 3.23 | 7 | E | 100 | 1004 |
| 16:00 | 21:00 | 14.4°C | 11.1°C | 4.35 | 6.8 | ESE | 100 | 1002 |
| 17:00 | 22:00 | 16.6°C | 15.8°C | 4.91 | 4.3 | E | 100 | 1001 |
| 18:00 | 23:00 | 17.1°C | 17.6°C | 3.65 | 2.7 | E | 98 | 1000 |
| 19:00 | 00:00 | 18°C | 19.4°C | 0.24 | 1.8 | E | 97 | 1000 |
| 20:00 | 01:00 | 16.9°C | 18.6°C | 0 | 0.7 | SW | 98 | 1001 |
| 21:00 | 02:00 | 14.8°C | 13.8°C | 0 | 3.7 | WSW | 99 | 1001 |
| 22:00 | 03:00 | 13.9°C | 10.5°C | 0 | 6.5 | W | 99 | 1002 |
| 23:00 | 04:00 | 14.5°C | 10.3°C | 0 | 7.9 | W | 99 | 1003 |
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 20 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 (2026-07-20). 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 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Willmar, 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 Willmar, 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.