Roundup
United States · 4 July 2021
Average
27.4°C
low 19.7°C · high 35.9°C
Rainfall
1.4mm
rain recorded
Wind
2.9m/s
daily average
Humidity
35.4%
daily average
Cloud
56%
cover
Pressure
1010hPa
daily average
The temperature ranged from 19.7°C around 06:00 to 35.9°C around 15:00. Rain was recorded for one hour, around 14:00 (1.4mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
94th percentile
Low temperature
96th percentile
Rainfall
76th percentile
Wind
59th 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°C, versus 27.4°C on this specific day.
Sun & daylight
Sunrise
05:27
Sunset
21:09
Day length
15h 42m
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 | 24.3°C | 20.2°C | 0 | 4.5 | NNE | 31 | 1009 |
| 01:00 | 07:00 | 24.5°C | 20.4°C | 0 | 4.9 | NE | 32 | 1010 |
| 02:00 | 08:00 | 23.2°C | 19.8°C | 0 | 4.3 | NE | 39 | 1010 |
| 03:00 | 09:00 | 21.3°C | 18.6°C | 0 | 3.8 | NE | 48 | 1011 |
| 04:00 | 10:00 | 20.4°C | 18.1°C | 0 | 3.1 | NE | 51 | 1012 |
| 05:00 | 11:00 | 19.9°C | 18.2°C | 0 | 2.8 | NE | 55 | 1012 |
| 06:00 | 12:00 | 19.7°C | 18.9°C | 0 | 1.7 | NE | 58 | 1012 |
| 07:00 | 13:00 | 21°C | 20.7°C | 0 | 1.2 | NE | 56 | 1013 |
| 08:00 | 14:00 | 23.1°C | 22.7°C | 0 | 1.7 | E | 51 | 1012 |
| 09:00 | 15:00 | 27.5°C | 27.2°C | 0 | 1.8 | SE | 41 | 1012 |
| 10:00 | 16:00 | 27.9°C | 27.2°C | 0 | 2.2 | SSE | 39 | 1011 |
| 11:00 | 17:00 | 30.9°C | 29.6°C | 0 | 2.3 | SE | 30 | 1010 |
| 12:00 | 18:00 | 31.7°C | 30.4°C | 0 | 2.1 | SE | 27 | 1010 |
| 13:00 | 19:00 | 32.6°C | 31.1°C | 0.01 | 2.1 | S | 25 | 1009 |
| 14:00 | 20:00 | 34.2°C | 31.8°C | 1.31 | 3 | WSW | 21 | 1010 |
| 15:00 | 21:00 | 35.9°C | 32.9°C | 0 | 2.9 | NNW | 15 | 1009 |
| 16:00 | 22:00 | 33.1°C | 30.6°C | 0.04 | 2.5 | ESE | 20 | 1009 |
| 17:00 | 23:00 | 32.3°C | 29.1°C | 0 | 3.6 | SSE | 21 | 1008 |
| 18:00 | 00:00 | 31.7°C | 28.6°C | 0.01 | 3.6 | S | 22 | 1008 |
| 19:00 | 01:00 | 31.3°C | 28.3°C | 0 | 3.5 | SSW | 23 | 1008 |
| 20:00 | 02:00 | 30.2°C | 29°C | 0 | 3.6 | WSW | 38 | 1008 |
| 21:00 | 03:00 | 27.8°C | 26.1°C | 0 | 2.7 | WSW | 35 | 1008 |
| 22:00 | 04:00 | 27.4°C | 25.5°C | 0 | 2.4 | SW | 32 | 1008 |
| 23:00 | 05:00 | 25.2°C | 23.4°C | 0 | 2.8 | SW | 40 | 1009 |
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
- 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 2021 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 (2026-07-19). 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 19, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Roundup, 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 Roundup, 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.