Home / Williston / 12 May 2017
Williston
United States · 12 May 2017
Average
18°C
low 9.7°C · high 26.5°C
Rainfall
0mm
dry day
Wind
5.8m/s
daily average
Humidity
48.6%
daily average
Cloud
32%
cover
Pressure
1010hPa
daily average
The temperature ranged from 9.7°C around 05:00 to 26.5°C around 16:00. 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
90th percentile
Low temperature
84th percentile
Rainfall
49th 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 12.3°C, versus 18°C on this specific day.
Sun & daylight
Sunrise
06:17
Sunset
21:23
Day length
15h 6m
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 | 14.2°C | 10.8°C | 0 | 3.3 | ESE | 56 | 1014 |
| 01:00 | 06:00 | 13.7°C | 10.2°C | 0 | 3.5 | ESE | 56 | 1014 |
| 02:00 | 07:00 | 13.7°C | 10.2°C | 0 | 3.4 | ESE | 56 | 1014 |
| 03:00 | 08:00 | 12.4°C | 9.1°C | 0 | 3.2 | ESE | 62 | 1013 |
| 04:00 | 09:00 | 11.5°C | 8°C | 0 | 3.4 | E | 64 | 1013 |
| 05:00 | 10:00 | 9.7°C | 6°C | 0 | 3.6 | E | 70 | 1013 |
| 06:00 | 11:00 | 9.8°C | 6°C | 0 | 3.7 | E | 71 | 1013 |
| 07:00 | 12:00 | 9.7°C | 5.5°C | 0 | 4.4 | E | 72 | 1013 |
| 08:00 | 13:00 | 10.2°C | 5.7°C | 0 | 4.9 | E | 71 | 1013 |
| 09:00 | 14:00 | 13.5°C | 8.9°C | 0 | 5.1 | ESE | 59 | 1013 |
| 10:00 | 15:00 | 16.8°C | 12.2°C | 0 | 5.3 | ESE | 48 | 1012 |
| 11:00 | 16:00 | 19°C | 14.6°C | 0 | 5.4 | ESE | 47 | 1011 |
| 12:00 | 17:00 | 22.4°C | 17.8°C | 0 | 5.5 | ESE | 36 | 1011 |
| 13:00 | 18:00 | 23.3°C | 18.7°C | 0 | 5.7 | ESE | 36 | 1010 |
| 14:00 | 19:00 | 23.9°C | 19.2°C | 0 | 6.1 | ESE | 36 | 1009 |
| 15:00 | 20:00 | 25.8°C | 20.3°C | 0 | 6.7 | ESE | 30 | 1008 |
| 16:00 | 21:00 | 26.5°C | 20.4°C | 0 | 7.3 | ESE | 26 | 1007 |
| 17:00 | 22:00 | 25.7°C | 19.6°C | 0 | 7.6 | ESE | 30 | 1006 |
| 18:00 | 23:00 | 25.4°C | 19°C | 0 | 8.2 | ESE | 30 | 1005 |
| 19:00 | 00:00 | 25°C | 18.4°C | 0 | 8.4 | ESE | 32 | 1005 |
| 20:00 | 01:00 | 24.4°C | 17.9°C | 0 | 8.2 | ESE | 32 | 1005 |
| 21:00 | 02:00 | 21.4°C | 15.2°C | 0 | 8.2 | ESE | 43 | 1004 |
| 22:00 | 03:00 | 17.4°C | 10.7°C | 0 | 8.6 | ESE | 50 | 1005 |
| 23:00 | 04:00 | 17.1°C | 10.2°C | 0 | 8.8 | ESE | 51 | 1005 |
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 12 May 2017 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 (2026-07-19). 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 19, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Williston, 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 Williston, 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.