Circle
United States · 9 May 2021
Average
4.6°C
low 0°C · high 9.6°C
Rainfall
0.9mm
dry day
Wind
5m/s
daily average
Humidity
74.1%
daily average
Cloud
81%
cover
Pressure
1022hPa
daily average
The temperature ranged from 0°C around 23:00 to 9.6°C around 18:00. Rain was recorded across 2 hours, from around 11:00 to 12:00 (0.9mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
8th percentile
Low temperature
6th percentile
Rainfall
70th percentile
Wind
65th 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 13.1°C, versus 4.6°C on this specific day.
Sun & daylight
Sunrise
05:32
Sunset
20:25
Day length
14h 53m
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 | 1.7°C | -4.5°C | 0.01 | 6 | ESE | 93 | 1021 |
| 01:00 | 07:00 | 1.8°C | -3.9°C | 0.05 | 5.4 | ESE | 91 | 1021 |
| 02:00 | 08:00 | 2.2°C | -3°C | 0.03 | 4.8 | ESE | 92 | 1020 |
| 03:00 | 09:00 | 1.9°C | -3°C | 0.03 | 4.3 | ESE | 91 | 1021 |
| 04:00 | 10:00 | 1.9°C | -3.2°C | 0.03 | 4.6 | ESE | 91 | 1021 |
| 05:00 | 11:00 | 1.5°C | -3.3°C | 0.03 | 4.1 | E | 94 | 1021 |
| 06:00 | 12:00 | 1.7°C | -3.4°C | 0.03 | 4.7 | E | 94 | 1021 |
| 07:00 | 13:00 | 1.8°C | -4.1°C | 0.03 | 5.8 | E | 91 | 1022 |
| 08:00 | 14:00 | 3.4°C | -2.8°C | 0.04 | 6.1 | ESE | 83 | 1022 |
| 09:00 | 15:00 | 5°C | -1.2°C | 0.06 | 6.3 | ESE | 79 | 1022 |
| 10:00 | 16:00 | 4.8°C | -1.7°C | 0.08 | 6.7 | ESE | 79 | 1022 |
| 11:00 | 17:00 | 6.6°C | 0.1°C | 0.1 | 6.8 | ESE | 71 | 1022 |
| 12:00 | 18:00 | 6.3°C | 0°C | 0.13 | 6.4 | ESE | 72 | 1022 |
| 13:00 | 19:00 | 5.7°C | -0.3°C | 0.05 | 6 | ESE | 73 | 1022 |
| 14:00 | 20:00 | 7.3°C | 1.4°C | 0.08 | 5.8 | ESE | 64 | 1022 |
| 15:00 | 21:00 | 7.2°C | 1.3°C | 0.05 | 5.8 | E | 64 | 1022 |
| 16:00 | 22:00 | 8.6°C | 2.9°C | 0.03 | 5.4 | E | 55 | 1023 |
| 17:00 | 23:00 | 9.5°C | 3.5°C | 0 | 5.5 | E | 49 | 1022 |
| 18:00 | 00:00 | 9.6°C | 3.7°C | 0 | 5.4 | E | 48 | 1022 |
| 19:00 | 01:00 | 9.6°C | 4.2°C | 0 | 4.6 | ESE | 45 | 1022 |
| 20:00 | 02:00 | 6.4°C | 2.6°C | 0 | 2.2 | ESE | 54 | 1023 |
| 21:00 | 03:00 | 3.6°C | -0.3°C | 0 | 2.2 | SE | 62 | 1024 |
| 22:00 | 04:00 | 2.8°C | -0.8°C | 0 | 1.8 | S | 67 | 1024 |
| 23:00 | 05:00 | 0°C | -4°C | 0 | 2.2 | SW | 78 | 1024 |
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
- Circle — 47.500°, -105.500°, ERA5 grid cell center, 11.6 km from requested point
- Time zone
- America/Denver
- What's shown here
- The hourly and daily record for 9 May 2021 specifically — not a monthly average. See the Circle 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 Circle, United States (47.50°N, 105.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Circle, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Circle, 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 Circle, 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.