Home / Johnston / 13 December 2017
Johnston
United States · 13 December 2017
← 12 December 201714 December 2017 →
Average
-4.2°C
low -6.6°C · high 0.7°C
Rainfall
0.1mm
dry day
Wind
6.8m/s
daily average
Humidity
53.2%
daily average
Cloud
45%
cover
Pressure
996hPa
daily average
The temperature ranged from -6.6°C around 07:00 to 0.7°C around 00:00. 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
17th percentile
Low temperature
16th percentile
Rainfall
53th percentile
Wind
99th 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 1.9°C, versus -4.2°C on this specific day.
Sun & daylight
Sunrise
07:04
Sunset
16:15
Day length
9h 11m
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 | 05:00 | 0.7°C | -5.1°C | 0 | 5.1 | WNW | 82 | 992 |
| 01:00 | 06:00 | 0.1°C | -5.8°C | 0 | 5.1 | WNW | 80 | 992 |
| 02:00 | 07:00 | -0.9°C | -7.4°C | 0 | 5.7 | WNW | 77 | 993 |
| 03:00 | 08:00 | -2.8°C | -9.9°C | 0 | 6.1 | WNW | 69 | 993 |
| 04:00 | 09:00 | -3.7°C | -11.2°C | 0 | 6.4 | WNW | 64 | 993 |
| 05:00 | 10:00 | -6.2°C | -13.7°C | 0 | 6.1 | W | 58 | 993 |
| 06:00 | 11:00 | -6.4°C | -13.7°C | 0 | 5.7 | W | 57 | 993 |
| 07:00 | 12:00 | -6.6°C | -14.4°C | 0 | 6.4 | W | 57 | 993 |
| 08:00 | 13:00 | -6.4°C | -14.7°C | 0 | 7.1 | W | 56 | 994 |
| 09:00 | 14:00 | -5.8°C | -14.4°C | 0 | 7.6 | W | 53 | 994 |
| 10:00 | 15:00 | -5.1°C | -14.3°C | 0.01 | 8.5 | W | 51 | 995 |
| 11:00 | 16:00 | -4.6°C | -13.7°C | 0.02 | 8.3 | WNW | 47 | 994 |
| 12:00 | 17:00 | -4.4°C | -13.8°C | 0.03 | 8.6 | W | 44 | 994 |
| 13:00 | 18:00 | -4.2°C | -13.7°C | 0.02 | 8.9 | WNW | 43 | 994 |
| 14:00 | 19:00 | -3.8°C | -13.5°C | 0 | 9.1 | WNW | 44 | 995 |
| 15:00 | 20:00 | -3.6°C | -13.1°C | 0 | 8.7 | WNW | 44 | 996 |
| 16:00 | 21:00 | -3.6°C | -11.9°C | 0 | 7.2 | W | 44 | 997 |
| 17:00 | 22:00 | -4.1°C | -12.2°C | 0 | 6.7 | W | 44 | 998 |
| 18:00 | 23:00 | -4.2°C | -12°C | 0 | 6.3 | W | 44 | 999 |
| 19:00 | 00:00 | -4.5°C | -12.3°C | 0 | 6.4 | W | 44 | 1000 |
| 20:00 | 01:00 | -4.7°C | -12.5°C | 0 | 6.3 | W | 44 | 1001 |
| 21:00 | 02:00 | -5°C | -12.5°C | 0 | 5.8 | W | 44 | 1002 |
| 22:00 | 03:00 | -5.2°C | -12.2°C | 0 | 5.2 | W | 45 | 1002 |
| 23:00 | 04:00 | -5.1°C | -12.2°C | 0 | 5.2 | W | 43 | 1003 |
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
- Johnston — 41.750°, -71.500°, ERA5 grid cell center, 8.0 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 13 December 2017 specifically — not a monthly average. See the Johnston 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 (2026-07-20). Historical climate data for Johnston, United States (41.75°N, 71.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Johnston, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Johnston, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 20, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Johnston, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-20},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.