Home / Williston / 13 May 2021
Williston
United States · 13 May 2021
Average
11.8°C
low 2.2°C · high 19.4°C
Rainfall
0.1mm
dry day
Wind
1.6m/s
daily average
Humidity
58.4%
daily average
Cloud
43%
cover
Pressure
1018hPa
daily average
The temperature ranged from 2.2°C around 04:00 to 19.4°C around 15:00. No measurable rain was recorded during the day.
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
54th percentile
Low temperature
18th percentile
Rainfall
54th percentile
Wind
0th 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 12.5°C, versus 11.8°C on this specific day.
Sun & daylight
Sunrise
06:16
Sunset
21:24
Day length
15h 8m
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 | 6.8°C | 3.9°C | 0 | 2.4 | SSE | 88 | 1020 |
| 01:00 | 06:00 | 5.6°C | 2.6°C | 0 | 2.4 | S | 90 | 1020 |
| 02:00 | 07:00 | 5.4°C | 2.6°C | 0 | 2 | S | 89 | 1020 |
| 03:00 | 08:00 | 3.2°C | 0.4°C | 0 | 1.7 | SSE | 93 | 1019 |
| 04:00 | 09:00 | 2.2°C | -0.7°C | 0 | 1.7 | SSE | 95 | 1019 |
| 05:00 | 10:00 | 4.4°C | 1.2°C | 0 | 2.2 | S | 89 | 1019 |
| 06:00 | 11:00 | 4°C | 0.9°C | 0 | 2.1 | S | 90 | 1019 |
| 07:00 | 12:00 | 3.6°C | 0.8°C | 0 | 1.6 | SSW | 92 | 1020 |
| 08:00 | 13:00 | 4.3°C | 1.7°C | 0 | 1.5 | SW | 90 | 1020 |
| 09:00 | 14:00 | 11.4°C | 9.6°C | 0 | 0.9 | W | 67 | 1020 |
| 10:00 | 15:00 | 14.6°C | 12.7°C | 0 | 1.1 | NW | 53 | 1019 |
| 11:00 | 16:00 | 15.1°C | 13°C | 0 | 1.3 | NW | 49 | 1019 |
| 12:00 | 17:00 | 18.1°C | 15.6°C | 0 | 1.3 | NNW | 35 | 1018 |
| 13:00 | 18:00 | 18.4°C | 15.9°C | 0.02 | 1.2 | NNW | 33 | 1018 |
| 14:00 | 19:00 | 18.5°C | 15.9°C | 0.03 | 1.1 | N | 32 | 1017 |
| 15:00 | 20:00 | 19.4°C | 16.7°C | 0.03 | 1 | N | 27 | 1017 |
| 16:00 | 21:00 | 19.3°C | 16.5°C | 0.03 | 1 | NNW | 26 | 1017 |
| 17:00 | 22:00 | 19.3°C | 16.7°C | 0.03 | 0.9 | WNW | 27 | 1016 |
| 18:00 | 23:00 | 19.2°C | 16.5°C | 0.01 | 1 | WNW | 27 | 1016 |
| 19:00 | 00:00 | 19.2°C | 16.3°C | 0 | 1.4 | WNW | 28 | 1016 |
| 20:00 | 01:00 | 19°C | 16°C | 0 | 1.3 | NW | 26 | 1016 |
| 21:00 | 02:00 | 14°C | 10.9°C | 0 | 2.3 | NW | 47 | 1016 |
| 22:00 | 03:00 | 9.8°C | 5.9°C | 0 | 3 | NNW | 55 | 1017 |
| 23:00 | 04:00 | 9.4°C | 5.9°C | 0 | 2.5 | NNW | 57 | 1017 |
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
- Williston — 48.250°, -103.500°, ERA5 grid cell center, 14.4 km from requested point
- Time zone
- America/Chicago
- What's shown here
- The hourly and daily record for 13 May 2021 specifically — not a monthly average. See the Williston 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 (2026-07-21). Historical climate data for Williston, United States (48.25°N, 103.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Williston, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Williston, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 21, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Williston, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-21},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.