Home / Ithaca / 31 October 2021
Ithaca
United States · 31 October 2021
← 30 October 20211 November 2021 →
Average
10.4°C
low 9.2°C · high 12°C
Rainfall
0.8mm
dry day
Wind
3m/s
daily average
Humidity
90.6%
daily average
Cloud
85%
cover
Pressure
1003hPa
daily average
The temperature ranged from 9.2°C around 05:00 to 12°C around 17:00. Rain was recorded across 3 hours, from around 14:00 to 16:00 (0.8mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
49th percentile
Low temperature
87th percentile
Rainfall
51th percentile
Wind
40th 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 8.4°C, versus 10.4°C on this specific day.
Sun & daylight
Sunrise
07:38
Sunset
17:59
Day length
10h 21m
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 | 10.3°C | 8.9°C | 0 | 2 | SSE | 96 | 1001 |
| 01:00 | 05:00 | 9.7°C | 8.4°C | 0 | 1.5 | S | 97 | 1001 |
| 02:00 | 06:00 | 9.5°C | 8.3°C | 0 | 1.5 | SSW | 97 | 1000 |
| 03:00 | 07:00 | 9.4°C | 8.4°C | 0 | 1.1 | SSE | 98 | 1000 |
| 04:00 | 08:00 | 9.5°C | 8.7°C | 0.02 | 0.9 | SSW | 97 | 1000 |
| 05:00 | 09:00 | 9.2°C | 8.1°C | 0.01 | 1.1 | WSW | 98 | 1000 |
| 06:00 | 10:00 | 9.2°C | 7.9°C | 0 | 1.5 | W | 98 | 1000 |
| 07:00 | 11:00 | 9.3°C | 7.3°C | 0 | 2.5 | W | 97 | 1000 |
| 08:00 | 12:00 | 9.9°C | 8.2°C | 0 | 2.3 | W | 96 | 1001 |
| 09:00 | 13:00 | 10.5°C | 8.3°C | 0 | 3.1 | W | 94 | 1001 |
| 10:00 | 14:00 | 10.8°C | 8.1°C | 0.07 | 3.7 | W | 93 | 1002 |
| 11:00 | 15:00 | 11.1°C | 8.8°C | 0.07 | 3.2 | W | 92 | 1002 |
| 12:00 | 16:00 | 11.1°C | 8.8°C | 0.09 | 3.2 | W | 91 | 1002 |
| 13:00 | 17:00 | 11.6°C | 9°C | 0.08 | 3.7 | W | 88 | 1002 |
| 14:00 | 18:00 | 11.3°C | 8.3°C | 0.11 | 4.3 | W | 89 | 1002 |
| 15:00 | 19:00 | 11.1°C | 8.2°C | 0.12 | 4.2 | W | 91 | 1003 |
| 16:00 | 20:00 | 11.6°C | 8.5°C | 0.12 | 4.3 | W | 86 | 1004 |
| 17:00 | 21:00 | 12°C | 9°C | 0.02 | 4.1 | W | 81 | 1005 |
| 18:00 | 22:00 | 11.3°C | 8.2°C | 0.01 | 3.8 | W | 81 | 1006 |
| 19:00 | 23:00 | 11.1°C | 8°C | 0.02 | 3.8 | W | 81 | 1006 |
| 20:00 | 00:00 | 10.8°C | 7.6°C | 0.02 | 3.9 | W | 82 | 1008 |
| 21:00 | 01:00 | 10.3°C | 7.1°C | 0.01 | 3.9 | W | 83 | 1008 |
| 22:00 | 02:00 | 10.2°C | 6.8°C | 0.02 | 4 | W | 84 | 1009 |
| 23:00 | 03:00 | 9.8°C | 6.4°C | 0.02 | 4 | W | 85 | 1009 |
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
- Ithaca — 42.500°, -76.500°, ERA5 grid cell center, 6.6 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 31 October 2021 specifically — not a monthly average. See the Ithaca 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 Ithaca, United States (42.50°N, 76.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Ithaca, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Ithaca, 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 Ithaca, 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.