Roundup
United States · 4 July 2018
Average
15.1°C
low 5.5°C · high 23.6°C
Rainfall
0mm
dry day
Wind
2m/s
daily average
Humidity
60.2%
daily average
Cloud
10%
cover
Pressure
1022hPa
daily average
The temperature ranged from 5.5°C around 05:00 to 23.6°C around 17:00. 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
15th percentile
Low temperature
0th percentile
Rainfall
34th percentile
Wind
21th 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 21.5°C, versus 15.1°C on this specific day.
Sun & daylight
Sunrise
05:27
Sunset
21:09
Day length
15h 43m
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 | 9.1°C | 6.6°C | 0 | 2.4 | W | 87 | 1018 |
| 01:00 | 07:00 | 8.9°C | 6.6°C | 0 | 2.3 | W | 86 | 1018 |
| 02:00 | 08:00 | 8.3°C | 6.1°C | 0 | 2 | WSW | 87 | 1018 |
| 03:00 | 09:00 | 7.8°C | 5.4°C | 0 | 2 | WSW | 85 | 1019 |
| 04:00 | 10:00 | 6.1°C | 3.4°C | 0 | 1.9 | WSW | 85 | 1019 |
| 05:00 | 11:00 | 5.5°C | 2.6°C | 0 | 2 | WSW | 86 | 1020 |
| 06:00 | 12:00 | 5.5°C | 2.5°C | 0 | 2.3 | SW | 86 | 1021 |
| 07:00 | 13:00 | 7°C | 3.9°C | 0 | 2.5 | WSW | 81 | 1022 |
| 08:00 | 14:00 | 9.7°C | 7°C | 0 | 2.2 | WSW | 72 | 1022 |
| 09:00 | 15:00 | 16.2°C | 13.6°C | 0 | 1.9 | WSW | 46 | 1022 |
| 10:00 | 16:00 | 17°C | 14.7°C | 0 | 1.9 | WSW | 47 | 1022 |
| 11:00 | 17:00 | 18.8°C | 16.5°C | 0 | 1.8 | SW | 41 | 1022 |
| 12:00 | 18:00 | 19.1°C | 17°C | 0 | 1.6 | SW | 42 | 1022 |
| 13:00 | 19:00 | 19.6°C | 17.9°C | 0 | 1.2 | SW | 42 | 1022 |
| 14:00 | 20:00 | 20.5°C | 19.3°C | 0 | 0.8 | S | 41 | 1022 |
| 15:00 | 21:00 | 21.6°C | 20.7°C | 0 | 0.7 | SE | 41 | 1022 |
| 16:00 | 22:00 | 23.5°C | 22.1°C | 0 | 1.1 | E | 36 | 1022 |
| 17:00 | 23:00 | 23.6°C | 21.7°C | 0 | 1.9 | E | 36 | 1022 |
| 18:00 | 00:00 | 23.6°C | 21.1°C | 0 | 2.8 | E | 37 | 1022 |
| 19:00 | 01:00 | 23.2°C | 20.4°C | 0 | 3.4 | ENE | 38 | 1023 |
| 20:00 | 02:00 | 21.6°C | 19.4°C | 0 | 2.9 | ENE | 46 | 1024 |
| 21:00 | 03:00 | 16.5°C | 14.5°C | 0 | 2.6 | ENE | 62 | 1024 |
| 22:00 | 04:00 | 16.1°C | 14.2°C | 0 | 2.5 | E | 64 | 1026 |
| 23:00 | 05:00 | 14.4°C | 12.6°C | 0 | 2.4 | ENE | 71 | 1026 |
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
- Roundup — 46.500°, -108.500°, ERA5 grid cell center, 6.9 km from requested point
- Time zone
- America/Denver
- What's shown here
- The hourly and daily record for 4 July 2018 specifically — not a monthly average. See the Roundup 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 Roundup, United States (46.50°N, 108.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Roundup, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Roundup, 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 Roundup, 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.