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Apison

United States · 17 August 2018

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Average

26.2°C

low 23.3° · high 30.6°

Rainfall

2.2mm

rain recorded

Wind

3.2m/s

daily average

Humidity

76.3%

daily average

Cloud

87%

cover

Pressure

1019hPa

daily average

The temperature ranged from 23.3°C around 05:00 to 30.6°C around 14:00. Rain was recorded across 5 hours, from around 10:00 to 23:00 (2.2mm total).

How unusual was this day?

Compared against the same 135 calendar days (±7 days) across the other 9 years on file.

High temperature

33th percentile

Low temperature

83th percentile

Rainfall

72th percentile

Wind

97th 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 26.2°C, versus 26.2°C on this specific day.

Sun & daylight

Sunrise

07:01

Sunset

20:25

Day length

13h 24m

Hour by hour

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

↓ 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
00:0004:0025.927.303.9S741020
01:0005:0025.226.503.8S761020
02:0006:0024.626.103.4S761020
03:0007:0024.125.603.1S781020
04:0008:0023.825.603S811019
05:0009:0023.325.102.9S841020
06:0010:0023.426.102.7S901020
07:0011:0023.626.402.7SSE911020
08:0012:0023.626.40.032.8S911021
09:0013:002426.70.043.2S921021
10:0014:0025.628.60.122.8SSW831020
11:0015:002830.70.162.6SSW681020
12:0016:0029.231.90.022.9SSW661020
13:0017:0029.832.60.013S641019
14:0018:0030.6330.023.4S601019
15:0019:0028.830.903.7S671018
16:0020:0028.230.60.013.7SSW711017
17:0021:0028.529.80.014.2SSW641017
18:0022:0027.930.31.112.9SW681017
19:0023:0027.631.10.11.7S721017
20:0000:0027.129.802.8SE741017
21:0001:0026.227.704SSE731018
22:0002:0025.727.40.083.9S781019
23:0003:0024.326.60.473.5S881019

Same date, other years

202520242023202220212020201920172016

Nearby cities

Collegedale

0km away, same day

South Cleveland

0km away, same day

Ringgold

0km away, same day

Chattanooga

22.8km away, same day

East Chattanooga

22.8km away, same day

East Ridge

22.8km away, same day

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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
Apison — 35.000°, -85.000°, ERA5 grid cell center, 3.4 km from requested point
Time zone
America/New_York
What's shown here
The hourly and daily record for 17 August 2018 specifically — not a monthly average. See the Apison 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 Apison, United States (35.00°N, 85.00°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 Apison, 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 Apison, 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 Apison, 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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