Home / Perham / 21 May 2018

Perham

United States · 21 May 2018

← 20 May 201822 May 2018 →

Average

14.9°C

low 8° · high 21.9°

Rainfall

0mm

dry day

Wind

3m/s

daily average

Humidity

56.2%

daily average

Cloud

71%

cover

Pressure

1018hPa

daily average

The temperature ranged from 8°C around 04:00 to 21.9°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

70th percentile

Low temperature

41th percentile

Rainfall

35th percentile

Wind

29th 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 14.3°C, versus 14.9°C on this specific day.

Sun & daylight

Sunrise

05:41

Sunset

20:56

Day length

15h 15m

Hour by hour

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

↓ 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
00:0005:0010.4702.7ESE601021
01:0006:009.5602.7ESE621021
02:0007:008.95.502.6ESE631020
03:0008:008.55.202.5ESE661020
04:0009:0084.702.5ESE691020
05:0010:009.15.902.5ESE671019
06:0011:009.25.902.6ESE671019
07:0012:00106.602.9ESE631019
08:0013:0011.78.402.8ESE591019
09:0014:0016.112.802.8ESE441019
10:0015:0018.514.903.3ESE401019
11:0016:0018.915.104.1ESE441018
12:0017:0020.616.804.3ESE411018
13:0018:0020.816.90.014.6ESE401018
14:0019:0021.217.504.6SE421017
15:0020:0021.818.704SE431017
16:0021:0021.91904.2SE461017
17:0022:0016.714.103.5SE611016
18:0023:0016.41403SE601016
19:0000:0016.414.202.6SSE571016
20:0001:0016.714.802.1SSE571016
21:0002:0015.613.901.9SSE631016
22:0003:0014.813.201.9SSE681016
23:0004:0015.313.702.1SSE671016

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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
Perham — 46.500°, -95.500°, ERA5 grid cell center, 11.9 km from requested point
Time zone
America/Chicago
What's shown here
The hourly and daily record for 21 May 2018 specifically — not a monthly average. See the Perham 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 (2026-07-17). Historical climate data for Perham, United States (46.50°N, 95.50°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 Perham, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
MLA
"Historical Climate Data for Perham, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 17, 2026, www.pastclimate.com.
BibTeX
@misc{pastclimate,
  author = {PastClimate},
  title = {Historical climate data for Perham, United States},
  year = {2026},
  note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-17},
  url = {https://www.pastclimate.com/}
}

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