Home / Johnston / 5 December 2017
Johnston
United States · 5 December 2017
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Average
8.6°C
low 2°C · high 14°C
Rainfall
3.4mm
rain recorded
Wind
5.1m/s
daily average
Humidity
83.7%
daily average
Cloud
99%
cover
Pressure
1023hPa
daily average
The temperature ranged from 2°C around 02:00 to 14°C around 22:00. Rain was recorded across 6 hours, from around 17:00 to 23:00 (3.4mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
90th percentile
Low temperature
78th percentile
Rainfall
79th percentile
Wind
83th 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 2.9°C, versus 8.6°C on this specific day.
Sun & daylight
Sunrise
06:57
Sunset
16:15
Day length
9h 17m
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 | 2°C | -1.8°C | 0 | 2.7 | ESE | 87 | 1032 |
| 01:00 | 06:00 | 2.2°C | -1.7°C | 0 | 2.8 | SE | 88 | 1031 |
| 02:00 | 07:00 | 2°C | -1.8°C | 0 | 2.5 | SE | 89 | 1031 |
| 03:00 | 08:00 | 3°C | -0.9°C | 0 | 2.8 | SE | 85 | 1031 |
| 04:00 | 09:00 | 3.9°C | -0.2°C | 0.01 | 3.3 | SE | 83 | 1030 |
| 05:00 | 10:00 | 5.3°C | 1.6°C | 0.01 | 2.8 | SE | 79 | 1029 |
| 06:00 | 11:00 | 5.4°C | 1.5°C | 0 | 3.1 | SE | 80 | 1029 |
| 07:00 | 12:00 | 5.7°C | 1.7°C | 0.01 | 3.4 | SE | 79 | 1029 |
| 08:00 | 13:00 | 6.3°C | 2.1°C | 0 | 3.8 | SE | 78 | 1028 |
| 09:00 | 14:00 | 7.5°C | 3.1°C | 0 | 4.2 | SE | 76 | 1027 |
| 10:00 | 15:00 | 9°C | 4.8°C | 0 | 4.3 | SSE | 75 | 1027 |
| 11:00 | 16:00 | 9.3°C | 4.6°C | 0 | 5 | SSE | 73 | 1025 |
| 12:00 | 17:00 | 9.3°C | 4.5°C | 0 | 5.5 | SSE | 76 | 1024 |
| 13:00 | 18:00 | 9.6°C | 4.9°C | 0.01 | 5.4 | SSE | 79 | 1022 |
| 14:00 | 19:00 | 10°C | 5.3°C | 0.05 | 5.8 | SSE | 81 | 1021 |
| 15:00 | 20:00 | 10.6°C | 6°C | 0.05 | 5.9 | SSE | 84 | 1020 |
| 16:00 | 21:00 | 11.1°C | 6.2°C | 0.08 | 6.4 | S | 82 | 1019 |
| 17:00 | 22:00 | 12.4°C | 8.1°C | 0.19 | 6.5 | S | 90 | 1018 |
| 18:00 | 23:00 | 12.7°C | 8.5°C | 0.15 | 6.6 | S | 92 | 1017 |
| 19:00 | 00:00 | 13°C | 8.5°C | 0.09 | 7.1 | S | 90 | 1015 |
| 20:00 | 01:00 | 13.5°C | 8.7°C | 0.11 | 7.7 | S | 88 | 1015 |
| 21:00 | 02:00 | 13.7°C | 8.7°C | 0.29 | 8.1 | S | 89 | 1013 |
| 22:00 | 03:00 | 14°C | 8.7°C | 0.43 | 8.6 | S | 92 | 1012 |
| 23:00 | 04:00 | 13.9°C | 8.4°C | 1.87 | 9.2 | S | 94 | 1011 |
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 5 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.