Climate Change Chart of Martha's Vineyard, USA
Comprehensive Climate Change Chart of Martha's Vineyard, USA: Monthly Averages and Impact Trends
For Martha's Vineyard, USA, the climate data compare 1940–1950 with 2013–2023.
Averaged across calendar months, monthly mean temperature shows a difference of +1.00 °C in the more recent period; this is an unweighted comparison of month means, not a day-weighted annual average or a measure of daytime highs. The largest monthly increase was in December, with a difference of +3.20 °C.
Overview of climate changes
Temperature changes
Averaged across calendar months, monthly mean temperature shows a difference of +1.00 °C in the more recent period; this is an unweighted comparison of month means, not a day-weighted annual average or a measure of daytime highs. The largest monthly increase was in December, with a difference of +3.20 °C. By contrast, June had the largest monthly decrease, a difference of -0.47 °C. These extrema identify the strongest month-specific shifts, not a change shared by every month.
Changes in rainfall
Mean daily rainfall, rather than monthly rainfall totals, increased by a difference of +0.50 mm/day when the monthly means are averaged across calendar months; this is an unweighted mean, not a day-weighted annual figure. The largest monthly increase occurred in October, at a difference of +1.84 mm/day. The strongest decrease was in November, with a difference of -0.85 mm/day. These month-specific contrasts show why the overall average should not be read as a uniform change throughout the year.
Changes in sunshine duration
Across calendar months, the unweighted mean difference in daily sunshine duration was -0.14 hours/day; it is not a day-weighted annual average. The largest monthly increase was in May, where the difference was +0.65 hours/day, while February recorded the largest decrease, a difference of -0.88 hours/day. These daily-hour averages describe differences between the reference periods and do not imply that every day or month followed the same pattern.
Changes in snowfall
Mean daily snowfall increased by a difference of +0.25 mm/day in the unweighted average across calendar-month means; this is not a day-weighted annual average or a monthly total. The largest monthly increase was in March, with a difference of +1.98 mm/day, whereas the largest decrease occurred in December, at a difference of -1.71 mm/day. The average and monthly contrasts describe recorded snowfall differences between the periods, not a uniform change in every month.
Climate Change Data Overview for Martha's Vineyard, USA
Explore the comprehensive climate change data for Martha's Vineyard, USA. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes influenced by climate change, helping you understand the unique weather patterns of this region.
Temperature °C
| Month | ⌀ 1940 - 1950 | ⌀ 2013 - 2023 | +/- |
|---|---|---|---|
| Jan | -0.78 | 1.48 | 2.26 |
| Feb | -0.96 | 1.47 | 2.43 |
| Mar | 3.15 | 3.31 | 0.16 |
| Apr | 7.66 | 7.92 | 0.26 |
| May | 13.18 | 12.76 | -0.41 |
| Jun | 18.22 | 17.75 | -0.47 |
| Jul | 21.85 | 22.04 | 0.19 |
| Aug | 21.18 | 22.03 | 0.86 |
| Sep | 18.07 | 19.16 | 1.09 |
| Oct | 13.05 | 14.63 | 1.59 |
| Nov | 7.95 | 8.75 | 0.80 |
| Dec | 1.56 | 4.76 | 3.20 |
| ⌀ Month | 10.34 | 11.34 | 1.00 |
Sunshine (h) / day
| Month | ⌀ 1940 - 1950 | ⌀ 2013 - 2023 | +/- |
|---|---|---|---|
| Jan | 5.73 | 5.66 | -0.06 |
| Feb | 7.16 | 6.27 | -0.88 |
| Mar | 8.21 | 7.86 | -0.35 |
| Apr | 9.09 | 8.77 | -0.32 |
| May | 9.29 | 9.93 | 0.65 |
| Jun | 10.75 | 10.91 | 0.17 |
| Jul | 10.78 | 11.21 | 0.42 |
| Aug | 10.62 | 10.67 | 0.05 |
| Sep | 9.33 | 9.10 | -0.23 |
| Oct | 7.83 | 7.37 | -0.46 |
| Nov | 6.25 | 6.44 | 0.19 |
| Dec | 5.91 | 5.06 | -0.85 |
| ⌀ Month | 8.41 | 8.27 | -0.14 |
Rain (mm) / day
| Month | ⌀ 1940 - 1950 | ⌀ 2013 - 2023 | +/- |
|---|---|---|---|
| Jan | 1.94 | 2.61 | 0.67 |
| Feb | 1.80 | 2.57 | 0.77 |
| Mar | 2.45 | 2.38 | -0.07 |
| Apr | 2.83 | 3.34 | 0.52 |
| May | 3.00 | 3.09 | 0.09 |
| Jun | 2.66 | 3.12 | 0.46 |
| Jul | 2.60 | 2.86 | 0.26 |
| Aug | 2.57 | 2.44 | -0.13 |
| Sep | 2.02 | 3.11 | 1.09 |
| Oct | 2.54 | 4.39 | 1.84 |
| Nov | 4.04 | 3.19 | -0.85 |
| Dec | 2.22 | 3.52 | 1.30 |
| ⌀ Month | 2.56 | 3.05 | 0.50 |
Snow (mm) / day
| Month | ⌀ 1940 - 1950 | ⌀ 2013 - 2023 | +/- |
|---|---|---|---|
| Jan | 7.02 | 7.55 | 0.54 |
| Feb | 8.41 | 10.36 | 1.96 |
| Mar | 4.53 | 6.51 | 1.98 |
| Apr | 0.80 | 0.67 | -0.13 |
| May | 0.00 | 0.01 | 0.01 |
| Jun | 0.00 | 0.00 | 0.00 |
| Jul | 0.00 | 0.00 | 0.00 |
| Aug | 0.00 | 0.00 | 0.00 |
| Sep | 0.00 | 0.00 | 0.00 |
| Oct | 0.00 | 0.00 | 0.00 |
| Nov | 0.21 | 0.55 | 0.34 |
| Dec | 3.84 | 2.14 | -1.71 |
| ⌀ Month | 2.07 | 2.32 | 0.25 |
