Average annual temperature is 12.5 °C
Absolute maximum temperature: 33.5 °C
Absolute minimum temperature: -11.6 °C
Number of sunny days: 141 days
Number of rainy days: 211 days
Number of snow days: 13 days
Look at detailed online map of Greenock
* Weather data for Greenock United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 17.5 | 21.3 | 21.7 | 28.3 | 30.2 | 33.2 | 32.4 | 31.2 | 33.5 | 28.0 | 19.4 | 16.8 |
| Average daytime temperature (°C) | 7.9 | 11.3 | 10.8 | 19.2 | 22.2 | 26.1 | 28.5 | 27.2 | 24.5 | 18.5 | 11.6 | 9.1 |
| Average temperature (°C) | 3.8 | 4.7 | 5.0 | 12.1 | 15.6 | 19.7 | 23.0 | 21.8 | 18.9 | 13.6 | 6.3 | 5.1 |
| Average night temperature (°C) | 0.8 | -0.3 | 0.5 | 6.4 | 9.3 | 14.2 | 18.8 | 17.2 | 14.3 | 9.4 | 2.1 | 1.9 |
| Absolute minimum temperature (°C) | -6.3 | -11.6 | -7.5 | -1.8 | 2.5 | 9.7 | 15.0 | 12.1 | 9.3 | 1.4 | -6.5 | -4.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.4 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 2.9 | 6.7 | 6.0 | 8.6 | 10.5 | 10.9 | 10.9 | 10.7 | 8.6 | 6.3 | 6.8 | 4.0 |
| Precipitation (mm) | 114 | 68 | 104 | 66 | 88 | 140 | 149 | 105 | 58 | 109 | 51 | 73 |
| Sunny days | 4 | 13 | 11 | 13 | 21 | 10 | 4 | 8 | 12 | 14 | 20 | 11 |
| Rainy days | 20 | 14 | 17 | 17 | 10 | 20 | 27 | 23 | 18 | 17 | 9 | 19 |
| Snow days | 7 | 1 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Greenock during the most sunny months:
The largest precipitation sum in Greenock is at