Home / Frederick / 26 September 2018
Frederick
United States · 26 September 2018
← 25 September 201827 September 2018 →
Average
23.2°C
low 20.1°C · high 28.2°C
Rainfall
7.9mm
rain recorded
Wind
2.8m/s
daily average
Humidity
87.4%
daily average
Cloud
97%
cover
Pressure
1015hPa
daily average
The temperature ranged from 20.1°C around 23:00 to 28.2°C around 16:00. Rain was recorded across 5 hours, from around 11:00 to 21:00 (7.9mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
82th percentile
Low temperature
95th percentile
Rainfall
87th percentile
Wind
75th 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 18.9°C, versus 23.2°C on this specific day.
Sun & daylight
Sunrise
07:01
Sunset
19:00
Day length
11h 59m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/New_York.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 04:00 | 21°C | 23.2°C | 0 | 2.4 | SSE | 97 | 1019 |
| 01:00 | 05:00 | 21.1°C | 23°C | 0 | 2.7 | SSE | 96 | 1018 |
| 02:00 | 06:00 | 21.1°C | 22.9°C | 0 | 3.1 | SSE | 96 | 1018 |
| 03:00 | 07:00 | 21.1°C | 22.9°C | 0 | 3 | S | 96 | 1017 |
| 04:00 | 08:00 | 21°C | 22.7°C | 0 | 3 | S | 96 | 1016 |
| 05:00 | 09:00 | 20.8°C | 22.6°C | 0 | 3 | S | 97 | 1016 |
| 06:00 | 10:00 | 21.3°C | 23.5°C | 0 | 2.5 | S | 96 | 1016 |
| 07:00 | 11:00 | 21.3°C | 23.3°C | 0 | 2.6 | S | 95 | 1016 |
| 08:00 | 12:00 | 21.5°C | 23.4°C | 0 | 2.8 | S | 94 | 1016 |
| 09:00 | 13:00 | 22.2°C | 24°C | 0 | 3.3 | S | 93 | 1016 |
| 10:00 | 14:00 | 23.3°C | 25.2°C | 0 | 3.5 | SSW | 89 | 1016 |
| 11:00 | 15:00 | 25.5°C | 27.3°C | 0.32 | 3 | SSW | 74 | 1015 |
| 12:00 | 16:00 | 26.4°C | 28.3°C | 0.02 | 3.3 | SSW | 73 | 1015 |
| 13:00 | 17:00 | 27.3°C | 29.3°C | 0.01 | 3 | SSW | 68 | 1014 |
| 14:00 | 18:00 | 27.8°C | 30.1°C | 0.05 | 2.7 | SSW | 67 | 1013 |
| 15:00 | 19:00 | 27.8°C | 30.4°C | 0.08 | 2.7 | SSW | 69 | 1012 |
| 16:00 | 20:00 | 28.2°C | 30.9°C | 0.03 | 2.5 | SSW | 67 | 1012 |
| 17:00 | 21:00 | 26.2°C | 29.7°C | 2.58 | 2 | SSW | 79 | 1012 |
| 18:00 | 22:00 | 24.4°C | 28.1°C | 3.14 | 2.7 | WNW | 96 | 1013 |
| 19:00 | 23:00 | 23.6°C | 26.9°C | 1.53 | 2.7 | WNW | 95 | 1013 |
| 20:00 | 00:00 | 22.5°C | 25.1°C | 0.06 | 2.7 | NW | 95 | 1014 |
| 21:00 | 01:00 | 21.6°C | 23.2°C | 0.1 | 3.2 | NNW | 91 | 1015 |
| 22:00 | 02:00 | 20.7°C | 21.9°C | 0 | 2.9 | NNW | 90 | 1016 |
| 23:00 | 03:00 | 20.1°C | 21°C | 0 | 2.7 | NW | 88 | 1017 |
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
- Frederick — 39.500°, -77.500°, ERA5 grid cell center, 12.2 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 26 September 2018 specifically — not a monthly average. See the Frederick 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 Frederick, United States (39.50°N, 77.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Frederick, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Frederick, 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 Frederick, 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.