Home / Ephraim / 21 September 2017
Ephraim
United States · 21 September 2017
← 20 September 201722 September 2017 →
Average
12.2°C
low 6.3°C · high 19.6°C
Rainfall
3mm
rain recorded
Wind
3.6m/s
daily average
Humidity
47.9%
daily average
Cloud
33%
cover
Pressure
1003hPa
daily average
The temperature ranged from 6.3°C around 23:00 to 19.6°C around 15:00. Rain was recorded across 10 hours, from around 13:00 to 23:00 (3mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
24th percentile
Low temperature
45th percentile
Rainfall
96th percentile
Wind
99th 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 14°C, versus 12.2°C on this specific day.
Sun & daylight
Sunrise
07:13
Sunset
19:24
Day length
12h 11m
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 | 9.5°C | 5.4°C | 0 | 2.8 | SW | 47 | 1004 |
| 01:00 | 07:00 | 9.3°C | 5.3°C | 0 | 2.8 | SW | 50 | 1004 |
| 02:00 | 08:00 | 9.4°C | 5.3°C | 0 | 3 | SSW | 52 | 1004 |
| 03:00 | 09:00 | 7°C | 2.9°C | 0 | 2.9 | SSW | 60 | 1004 |
| 04:00 | 10:00 | 7.3°C | 3°C | 0 | 3.2 | SSE | 57 | 1004 |
| 05:00 | 11:00 | 6.8°C | 2.6°C | 0 | 3.1 | SE | 61 | 1004 |
| 06:00 | 12:00 | 7.1°C | 3°C | 0 | 2.9 | SE | 61 | 1004 |
| 07:00 | 13:00 | 7.7°C | 3.7°C | 0 | 2.9 | SE | 60 | 1004 |
| 08:00 | 14:00 | 9.5°C | 6.2°C | 0 | 2 | SE | 54 | 1005 |
| 09:00 | 15:00 | 12.4°C | 8.8°C | 0 | 2.6 | SSE | 47 | 1005 |
| 10:00 | 16:00 | 14.6°C | 10°C | 0 | 4 | S | 40 | 1004 |
| 11:00 | 17:00 | 16.2°C | 11.3°C | 0 | 4.3 | SSW | 34 | 1004 |
| 12:00 | 18:00 | 17.4°C | 11.8°C | 0 | 4.9 | SSW | 29 | 1002 |
| 13:00 | 19:00 | 18.5°C | 11.7°C | 0.18 | 6.3 | SSW | 23 | 1001 |
| 14:00 | 20:00 | 19.2°C | 11.8°C | 0.18 | 6.9 | SSW | 19 | 999 |
| 15:00 | 21:00 | 19.6°C | 12.2°C | 0.39 | 6.9 | SSW | 19 | 999 |
| 16:00 | 22:00 | 18.2°C | 12.1°C | 0.14 | 5.5 | SSW | 26 | 998 |
| 17:00 | 23:00 | 17.8°C | 11.9°C | 0 | 5.4 | SSW | 27 | 998 |
| 18:00 | 00:00 | 16.8°C | 11.3°C | 0.28 | 4.6 | SW | 28 | 997 |
| 19:00 | 01:00 | 14.2°C | 10.7°C | 0.8 | 2.6 | WNW | 42 | 1000 |
| 20:00 | 02:00 | 11.5°C | 8.5°C | 0.18 | 2.3 | WNW | 58 | 1003 |
| 21:00 | 03:00 | 8.8°C | 6.4°C | 0.27 | 1.6 | WNW | 74 | 1004 |
| 22:00 | 04:00 | 7.2°C | 4.9°C | 0.14 | 1.7 | WNW | 85 | 1006 |
| 23:00 | 05:00 | 6.3°C | 4°C | 0.43 | 1.7 | WNW | 94 | 1006 |
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
- Ephraim — 39.250°, -111.500°, ERA5 grid cell center, 14.3 km from requested point
- Time zone
- America/Denver
- What's shown here
- The hourly and daily record for 21 September 2017 specifically — not a monthly average. See the Ephraim 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 Ephraim, United States (39.25°N, 111.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Ephraim, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Ephraim, 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 Ephraim, 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.