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Greenock, Scotland climate
Cfb Oceanic / temperate
Greenock has a mildly seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 66°F, while the coldest is December averaging around 35°F at night. Around 102 inches of precipitation falls each year, peaking in January (12.6 inches) and easing off in June (5.2 inches). At latitude 56°N, day length swings from 6.7 hours in midwinter to 17.3 hours at midsummer.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsGreenock climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 45 | 46 | 49 | 54 | 60 | 63 | 66 | 65 | 61 | 55 | 49 | 45 |
| Avg temp (°F) | 40 | 40 | 43 | 46 | 51 | 56 | 59 | 58 | 55 | 49 | 44 | 40 |
| Avg low (°F) | 35 | 35 | 37 | 39 | 43 | 48 | 52 | 51 | 48 | 43 | 39 | 35 |
| Precipitation (in) | 12.6 | 9.7 | 8.8 | 5.6 | 5.2 | 5.2 | 6.0 | 7.3 | 7.8 | 10.6 | 11.1 | 12.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 45 | 46 | 49 | 54 | 60 | 63 |
| Avg temp (°F) | 40 | 40 | 43 | 46 | 51 | 56 |
| Avg low (°F) | 35 | 35 | 37 | 39 | 43 | 48 |
| Precipitation (in) | 12.6 | 9.7 | 8.8 | 5.6 | 5.2 | 5.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 66 | 65 | 61 | 55 | 49 | 45 |
| Avg temp (°F) | 59 | 58 | 55 | 49 | 44 | 40 |
| Avg low (°F) | 52 | 51 | 48 | 43 | 39 | 35 |
| Precipitation (in) | 6.0 | 7.3 | 7.8 | 10.6 | 11.1 | 12.3 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 24 | 22 | 22 | 19 | 18 | 19 | 21 | 21 | 20 | 23 | 24 | 24 |
| Days with low ≤ 32°F (days) | 11 | 10 | 8 | 4 | 2 | 0.0 | — | — | 0.2 | 2 | 6 | 11 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 24 | 22 | 22 | 19 | 18 | 19 |
| Days with low ≤ 32°F (days) | 11 | 10 | 8 | 4 | 2 | 0.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 21 | 21 | 20 | 23 | 24 | 24 |
| Days with low ≤ 32°F (days) | — | — | 0.2 | 2 | 6 | 11 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 79 | 79 | 77 | 75 | 82 | 82 | 81 | 78 | 78 | 80 | 78 |
| Clear days (≤ 30% cloud) | 1 | 1.0 | 0.9 | 2 | 3 | 1 | 1 | 0.9 | 2 | 1 | 0.8 | 2 |
| Partly cloudy days (30–70%) | 7 | 6 | 8 | 6 | 7 | 5 | 5 | 6 | 6 | 7 | 7 | 6 |
| Cloudy days (≥ 70%) | 23 | 21 | 22 | 22 | 21 | 24 | 25 | 25 | 22 | 22 | 22 | 23 |
| Relative humidity (%) | 93 | 92 | 90 | 87 | 84 | 84 | 86 | 87 | 89 | 91 | 92 | 93 |
| Wind speed (mph) | 11.5 | 11.3 | 10.7 | 9.4 | 8.7 | 8.0 | 7.6 | 7.8 | 8.8 | 9.8 | 10.3 | 10.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 79 | 79 | 77 | 75 | 82 |
| Clear days (≤ 30% cloud) | 1 | 1.0 | 0.9 | 2 | 3 | 1 |
| Partly cloudy days (30–70%) | 7 | 6 | 8 | 6 | 7 | 5 |
| Cloudy days (≥ 70%) | 23 | 21 | 22 | 22 | 21 | 24 |
| Relative humidity (%) | 93 | 92 | 90 | 87 | 84 | 84 |
| Wind speed (mph) | 11.5 | 11.3 | 10.7 | 9.4 | 8.7 | 8.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 82 | 81 | 78 | 78 | 80 | 78 |
| Clear days (≤ 30% cloud) | 1 | 0.9 | 2 | 1 | 0.8 | 2 |
| Partly cloudy days (30–70%) | 5 | 6 | 6 | 7 | 7 | 6 |
| Cloudy days (≥ 70%) | 25 | 25 | 22 | 22 | 22 | 23 |
| Relative humidity (%) | 86 | 87 | 89 | 91 | 92 | 93 |
| Wind speed (mph) | 7.6 | 7.8 | 8.8 | 9.8 | 10.3 | 10.5 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 28 years of daily observations at Benmore: Younger Botanic Garde, a weather station, about 17 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.