Home / South Greeley / 18 May 2017
South Greeley
United States · 18 May 2017
Average
1.7°C
low -0.9° · high 5.3°
Rainfall
52.7mm
rain recorded
Wind
6.5m/s
daily average
Humidity
97.5%
daily average
Cloud
100%
cover
Pressure
1015hPa
daily average
The temperature ranged from -0.9°C around 17:00 to 5.3°C around 00:00. Rain was recorded across 24 hours, from around 00:00 to 23:00 (52.7mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
4th percentile
Low temperature
1th percentile
Rainfall
100th percentile
Wind
94th 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 12.4°C, versus 1.7°C on this specific day.
Sun & daylight
Sunrise
05:38
Sunset
20:13
Day length
14h 35m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Denver.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 06:00 | 5.3 | 1.9 | 0.49 | 3.2 | NNE | 97 | 1010 |
| 01:00 | 07:00 | 5.1 | 2.5 | 2.2 | 2 | NNE | 97 | 1010 |
| 02:00 | 08:00 | 5 | 2.3 | 2.36 | 2.2 | N | 100 | 1010 |
| 03:00 | 09:00 | 4 | -0.3 | 1.92 | 4.2 | NNE | 100 | 1010 |
| 04:00 | 10:00 | 3 | -3.6 | 1.82 | 7.2 | NE | 100 | 1012 |
| 05:00 | 11:00 | 3.2 | -3.9 | 1.95 | 7.9 | NE | 100 | 1012 |
| 06:00 | 12:00 | 3 | -3.7 | 1.85 | 7.5 | NE | 99 | 1011 |
| 07:00 | 13:00 | 2.9 | -4 | 1.83 | 7.7 | NE | 99 | 1012 |
| 08:00 | 14:00 | 2.6 | -4.5 | 2.09 | 7.8 | NE | 98 | 1012 |
| 09:00 | 15:00 | 2.5 | -4 | 2.16 | 6.9 | NNE | 98 | 1013 |
| 10:00 | 16:00 | 2.2 | -3.8 | 2.24 | 6.1 | NNE | 98 | 1014 |
| 11:00 | 17:00 | 2.4 | -3.6 | 2.44 | 6.2 | NNE | 98 | 1014 |
| 12:00 | 18:00 | 2 | -3.8 | 2.49 | 5.8 | NNE | 99 | 1014 |
| 13:00 | 19:00 | 1.4 | -4.5 | 2.79 | 5.9 | NNE | 100 | 1014 |
| 14:00 | 20:00 | 0.9 | -5.8 | 2.64 | 6.8 | NNE | 100 | 1014 |
| 15:00 | 21:00 | -0.2 | -7.1 | 2.92 | 7.1 | NNE | 100 | 1015 |
| 16:00 | 22:00 | -0.4 | -9 | 2.85 | 9.3 | N | 100 | 1019 |
| 17:00 | 23:00 | -0.9 | -10.1 | 2.61 | 10.1 | N | 100 | 1019 |
| 18:00 | 00:00 | -0.9 | -8.6 | 2.7 | 7.9 | N | 97 | 1020 |
| 19:00 | 01:00 | -0.5 | -7.6 | 2.58 | 6.9 | NNW | 93 | 1020 |
| 20:00 | 02:00 | -0.5 | -7.8 | 2.24 | 7.3 | NNW | 92 | 1020 |
| 21:00 | 03:00 | -0.2 | -7.3 | 2.12 | 7.1 | NNW | 92 | 1020 |
| 22:00 | 04:00 | -0.2 | -6.9 | 1.83 | 6.5 | N | 92 | 1021 |
| 23:00 | 05:00 | -0.3 | -6.6 | 1.56 | 5.9 | N | 93 | 1021 |
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
- South Greeley — 41.000°, -104.750°, ERA5 grid cell center, 11.8 km from requested point
- Time zone
- America/Denver
- What's shown here
- The hourly and daily record for 18 May 2017 specifically — not a monthly average. See the South Greeley 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 (2026-07-16). Historical climate data for South Greeley, United States (41.00°N, 104.75°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for South Greeley, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 16, 2026, from https://www.pastclimate.com/
"Historical Climate Data for South Greeley, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 16, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for South Greeley, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-16},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.