Home / Spearfish / 31 May 2017
Spearfish
United States · 31 May 2017
Average
15.9°C
low 5.1°C · high 25.3°C
Rainfall
0mm
dry day
Wind
4m/s
daily average
Humidity
46.4%
daily average
Cloud
5%
cover
Pressure
1014hPa
daily average
The temperature ranged from 5.1°C around 04:00 to 25.3°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
73th percentile
Low temperature
9th percentile
Rainfall
24th percentile
Wind
84th 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 15.8°C, versus 15.9°C on this specific day.
Sun & daylight
Sunrise
05:13
Sunset
20:32
Day length
15h 18m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Denver.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 06:00 | 8.2°C | 4.1°C | 0 | 3 | SE | 53 | 1018 |
| 01:00 | 07:00 | 7.5°C | 3.3°C | 0 | 3 | SSE | 54 | 1018 |
| 02:00 | 08:00 | 6.9°C | 2.7°C | 0 | 2.9 | SSE | 56 | 1017 |
| 03:00 | 09:00 | 6°C | 1.8°C | 0 | 2.8 | SSE | 57 | 1017 |
| 04:00 | 10:00 | 5.1°C | 0.8°C | 0 | 3 | SSE | 62 | 1017 |
| 05:00 | 11:00 | 5.6°C | 1.4°C | 0 | 2.9 | SSE | 61 | 1017 |
| 06:00 | 12:00 | 5.8°C | 1.4°C | 0 | 3 | SSE | 59 | 1017 |
| 07:00 | 13:00 | 7.5°C | 3.4°C | 0 | 3 | SE | 61 | 1016 |
| 08:00 | 14:00 | 12.6°C | 8.7°C | 0 | 3.2 | SE | 49 | 1016 |
| 09:00 | 15:00 | 18.7°C | 14.6°C | 0 | 3.7 | SE | 35 | 1015 |
| 10:00 | 16:00 | 19.7°C | 15.3°C | 0 | 4.1 | SE | 33 | 1015 |
| 11:00 | 17:00 | 21.8°C | 17.3°C | 0 | 4.5 | ESE | 30 | 1014 |
| 12:00 | 18:00 | 22.6°C | 18.1°C | 0 | 4.8 | ESE | 31 | 1013 |
| 13:00 | 19:00 | 22.7°C | 18.2°C | 0.01 | 4.8 | ESE | 31 | 1013 |
| 14:00 | 20:00 | 23.8°C | 19.8°C | 0.01 | 4.3 | SE | 31 | 1012 |
| 15:00 | 21:00 | 25.3°C | 21.5°C | 0 | 4.2 | SE | 29 | 1011 |
| 16:00 | 22:00 | 25°C | 21.1°C | 0.01 | 4.6 | SE | 32 | 1011 |
| 17:00 | 23:00 | 24.4°C | 20.2°C | 0 | 5 | SE | 32 | 1010 |
| 18:00 | 00:00 | 23.7°C | 19.2°C | 0 | 5.4 | SSE | 34 | 1010 |
| 19:00 | 01:00 | 22.8°C | 18.9°C | 0 | 4.7 | SE | 37 | 1010 |
| 20:00 | 02:00 | 20.8°C | 16.9°C | 0 | 4.8 | SSE | 43 | 1010 |
| 21:00 | 03:00 | 15.5°C | 11.7°C | 0 | 4.9 | SSE | 64 | 1010 |
| 22:00 | 04:00 | 15.4°C | 11.9°C | 0 | 4.8 | SSE | 67 | 1011 |
| 23:00 | 05:00 | 14.4°C | 11°C | 0 | 4.7 | SSE | 72 | 1011 |
Nearby cities
Need this verified for an official or legal purpose? Request a weather verification report.
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
- Spearfish — 44.500°, -103.750°, ERA5 grid cell center, 8.7 km from requested point
- Time zone
- America/Denver
- What's shown here
- The hourly and daily record for 31 May 2017 specifically — not a monthly average. See the Spearfish 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 Spearfish, United States (44.50°N, 103.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Spearfish, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Spearfish, 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 Spearfish, 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.