Home / Circle / 9 May 2018

Circle

United States · 9 May 2018

CircleUnited States9:37 AM localChange location

← 8 May 201810 May 2018 →

Average

14.6°C

low 9.1° · high 19.9°

Rainfall

0mm

dry day

Wind

4.6m/s

daily average

Humidity

61.4%

daily average

Cloud

42%

cover

Pressure

1014hPa

daily average

The temperature ranged from 9.1°C around 07:00 to 19.9°C around 14:00. 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

58th percentile

Low temperature

76th percentile

Rainfall

41th 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 12.6°C, versus 14.6°C on this specific day.

Sun & daylight

Sunrise

05:32

Sunset

20:24

Day length

14h 52m

Hour by hour

Temperature (line) and hourly rainfall (bars), local time — America/Denver.

↓ Download CSV
00:0006:0012:0018:0023:00

Cumulative rainfall through the day.

00:0006:0012:0018:0023:00
Local timeUTCTemp °CFeels °CRain mmWind m/sDirHumidity %Pressure hPa
00:0006:0012.710.103.9WSW871011
01:0007:0012.99.804.6W841011
02:0008:0011.88.105.1WNW841012
03:0009:0010.97.105NW861013
04:0010:0010.57.304.2WNW901013
05:0011:00106.704.2WNW911013
06:0012:009.35.904.1WNW921014
07:0013:009.15.604.2NW941015
08:0014:0010.77.504NNW851015
09:0015:0015.812.904.1N671015
10:0016:0016.713.903.9N621015
11:0017:0018.315.303.7N511015
12:0018:0019.115.704.1N491014
13:0019:0019.315.804.4N491014
14:0020:0019.915.804.5N411014
15:0021:0019.11504.6N421013
16:0022:0019.114.105.2NNE371013
17:0023:0018.413.605.3NE411013
18:0000:0018.413.605.3NE421013
19:0001:0018.21305.6NE401013
20:0002:0015.710.605.2NE431014
21:0003:00126.505ENE431014
22:0004:0011.65.904.9ENE381015
23:0005:0010.44.305.2ENE361015

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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 2018 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

Plain text
PastClimate (2026-07-18). 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/
APA
PastClimate. (2026). Historical climate data for Circle, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
MLA
"Historical Climate Data for Circle, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 18, 2026, www.pastclimate.com.
BibTeX
@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 2026-07-18},
  url = {https://www.pastclimate.com/}
}

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