Weather & Climate
Grand Falls-Windsor, Newfoundland and Labrador, Canada
Overview
Available climate summaries for Grand Falls-Windsor. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
3.9°C
Summer Avg
14.9°C
Winter Avg
-6.7°C
Record High
31°C
Record Low
-28.7°C
Annual Precipitation
1110.9 mm
Avg Humidity
88%
Summer Humidity
84%
Winter Humidity
94%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 13.1° | -7.9° | -28.7° | 89.9 | 95% | 34 | 32.1 |
| Feb | 10.2° | -7.8° | -25.7° | 83.7 | 95% | 54 | 38.5 |
| Mar | 12.3° | -4.5° | -22.5° | 77.8 | 91% | 92 | 30.8 |
| Apr | 18.8° | 1.3° | -13.6° | 74.4 | 83% | 121 | 31.9 |
| May | 25.8° | 6.6° | -8.2° | 83.7 | 82% | 146 | 26.9 |
| Jun | 29.4° | 11.8° | -3.3° | 89.4 | 83% | 149 | 23.1 |
| Jul | 31° | 16.6° | 2.9° | 106 | 83% | 159 | 21.9 |
| Aug | 29.1° | 16.2° | 1.5° | 103.5 | 85% | 135 | 23.9 |
| Sep | 28.2° | 11.7° | -3° | 101.4 | 86% | 101 | 28.2 |
| Oct | 23.8° | 6.1° | -5.2° | 99.5 | 89% | 65 | 28.6 |
| Nov | 17.8° | 0.8° | -15.3° | 100.2 | 90% | 36 | 30.2 |
| Dec | 13.9° | -4.3° | -24.6° | 101.4 | 93% | 25 | 31 |
Data sources
Estimates and unverified origins
Oyster List climate data - Climate origins are unverified. Available methods include historical APIs and AI estimates; stored rows do not identify the original dataset, reference period, or model for each value. Treat these summaries as estimates until independently verified. Record updated 2026-03-22.