Roundup
United States · 30 June 2021
Average
27.1°C
low 16.3°C · high 34.6°C
Rainfall
0mm
dry day
Wind
2.8m/s
daily average
Humidity
25.7%
daily average
Cloud
0%
cover
Pressure
1012hPa
daily average
The temperature ranged from 16.3°C around 04:00 to 34.6°C around 16:00. 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
96th percentile
Low temperature
87th percentile
Rainfall
36th percentile
Wind
55th 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 20°C, versus 27.1°C on this specific day.
Sun & daylight
Sunrise
05:24
Sunset
21:10
Day length
15h 46m
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 | 23.1°C | 19.5°C | 0 | 3.3 | ESE | 28 | 1014 |
| 01:00 | 07:00 | 22.4°C | 18.8°C | 0 | 3 | ESE | 29 | 1014 |
| 02:00 | 08:00 | 20.9°C | 17.6°C | 0 | 2.7 | E | 32 | 1014 |
| 03:00 | 09:00 | 18.8°C | 15.7°C | 0 | 2.6 | E | 39 | 1014 |
| 04:00 | 10:00 | 16.3°C | 13.9°C | 0 | 1.9 | ENE | 48 | 1014 |
| 05:00 | 11:00 | 17.7°C | 15.9°C | 0 | 0.9 | NE | 43 | 1015 |
| 06:00 | 12:00 | 18.1°C | 16.5°C | 0 | 0.6 | NNW | 42 | 1015 |
| 07:00 | 13:00 | 18°C | 16.5°C | 0 | 1 | NNW | 47 | 1015 |
| 08:00 | 14:00 | 22°C | 20.7°C | 0 | 0.8 | NE | 38 | 1015 |
| 09:00 | 15:00 | 27.3°C | 25.3°C | 0 | 1.2 | ENE | 25 | 1015 |
| 10:00 | 16:00 | 28.3°C | 25.9°C | 0 | 2 | E | 23 | 1014 |
| 11:00 | 17:00 | 31.1°C | 27.5°C | 0 | 3.1 | E | 18 | 1013 |
| 12:00 | 18:00 | 31.7°C | 27.7°C | 0 | 3.9 | ESE | 17 | 1013 |
| 13:00 | 19:00 | 32.2°C | 28.3°C | 0 | 3.8 | ESE | 17 | 1012 |
| 14:00 | 20:00 | 33.4°C | 29.4°C | 0 | 3.8 | ESE | 16 | 1012 |
| 15:00 | 21:00 | 34.4°C | 30.1°C | 0 | 4 | E | 13 | 1011 |
| 16:00 | 22:00 | 34.6°C | 30.5°C | 0 | 3.8 | ESE | 14 | 1011 |
| 17:00 | 23:00 | 34.6°C | 30.5°C | 0 | 3.8 | E | 14 | 1010 |
| 18:00 | 00:00 | 34.6°C | 30.1°C | 0 | 4.2 | E | 13 | 1010 |
| 19:00 | 01:00 | 34.6°C | 29.9°C | 0 | 4.5 | E | 13 | 1010 |
| 20:00 | 02:00 | 32.9°C | 29°C | 0 | 3.6 | ENE | 16 | 1010 |
| 21:00 | 03:00 | 28.2°C | 25.1°C | 0 | 3 | ENE | 23 | 1010 |
| 22:00 | 04:00 | 27.8°C | 24.3°C | 0 | 3.2 | ENE | 23 | 1010 |
| 23:00 | 05:00 | 26.2°C | 22.7°C | 0 | 3.6 | E | 27 | 1010 |
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 30 June 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 (2026-07-18). 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 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Roundup, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 18, 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 2026-07-18},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.