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Portofino vs Crested Butte
Comparing Portofino change · Crested Butte change
Portofino is the warmer of the two — about 15°C on the annual average; Portofino is the wetter, with 345 mm more rain a year.
How the seasons compare
The differences between Portofino and Crested Butte, in everyday terms.
Summers
Portofino has hotter summers
Portofino: Warm
Crested Butte: Mild
Winters
Portofino has far milder winters
Portofino: Cool
Crested Butte: Bitterly cold
Rain & snow
Portofino is wetter
Portofino: Moderate rainfall
Crested Butte: Moderate rainfall
Sky
Similar amounts of sun
Portofino: Partly cloudy
Crested Butte: Partly cloudy
Month-by-month charts
Temperature
Portofino is the warmer of the two — about 15°C on the annual average.
Precipitation
Portofino is the wetter — about 345 mm more across the year.
Clear skies
The two cities see a similar amount of sun.
Exact monthly numbers
Tap a metric to open its full table. Desktop shows all twelve months; on a phone each metric splits into Jan–Jun and Jul–Dec.
Avg high (°C) Portofino runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Portofino | 12 | 13 | — | 18 | — | 25 | 28 | 28 | 25 | 21 | 16 | 13 |
| Crested Butte | -3 | -1 | 4 | 8 | 15 | 21 | 25 | 23 | 19 | 13 | 4 | -3 |
| Difference | -15 | -14 | — | -10 | — | -3 | -3 | -5 | -6 | -8 | -12 | -16 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Portofino | 12 | 13 | — | 18 | — | 25 |
| Crested Butte | -3 | -1 | 4 | 8 | 15 | 21 |
| Difference | -15 | -14 | — | -10 | — | -3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Portofino | 28 | 28 | 25 | 21 | 16 | 13 |
| Crested Butte | 25 | 23 | 19 | 13 | 4 | -3 |
| Difference | -3 | -5 | -6 | -8 | -12 | -16 |
Avg low (°C) Portofino runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Portofino | 6 | 7 | 9 | 12 | — | 19 | 22 | 22 | 19 | 15 | 10 | 7 |
| Crested Butte | -21 | -19 | -14 | -7 | -2 | 1 | 4 | 4 | -0 | -6 | -13 | -20 |
| Difference | -27 | -25 | -22 | -19 | — | -18 | -17 | -18 | -19 | -20 | -23 | -27 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Portofino | 6 | 7 | 9 | 12 | — | 19 |
| Crested Butte | -21 | -19 | -14 | -7 | -2 | 1 |
| Difference | -27 | -25 | -22 | -19 | — | -18 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Portofino | 22 | 22 | 19 | 15 | 10 | 7 |
| Crested Butte | 4 | 4 | -0 | -6 | -13 | -20 |
| Difference | -17 | -18 | -19 | -20 | -23 | -27 |
Precipitation (mm) Portofino runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Portofino | 72 | 55 | 56 | 71 | — | 48 | 25 | 57 | 121 | 151 | 202 | 88 |
| Crested Butte | 69 | 65 | 54 | 51 | 38 | 24 | 50 | 50 | 49 | 43 | 51 | 57 |
| Difference | -3 | +10 | -2 | -20 | — | -24 | +25 | -7 | -72 | -108 | -151 | -31 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Portofino | 72 | 55 | 56 | 71 | — | 48 |
| Crested Butte | 69 | 65 | 54 | 51 | 38 | 24 |
| Difference | -3 | +10 | -2 | -20 | — | -24 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Portofino | 25 | 57 | 121 | 151 | 202 | 88 |
| Crested Butte | 50 | 50 | 49 | 43 | 51 | 57 |
| Difference | +25 | -7 | -72 | -108 | -151 | -31 |
Snowfall (cm)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Portofino | — | — | — | — | — | — | — | — | — | — | — | — |
| Crested Butte | 106 | 90 | 69 | 46 | 17 | 1 | 0 | 0 | 3 | 20 | 66 | 88 |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Portofino | — | — | — | — | — | — |
| Crested Butte | 106 | 90 | 69 | 46 | 17 | 1 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Portofino | — | — | — | — | — | — |
| Crested Butte | 0 | 0 | 3 | 20 | 66 | 88 |
| Difference | — | — | — | — | — | — |
Cloud cover (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Portofino | 60 | 58 | 54 | 59 | 59 | 49 | 38 | 41 | 51 | 64 | 66 | 63 |
| Crested Butte | 54 | 60 | 60 | 63 | 61 | 46 | 57 | 58 | 46 | 44 | 49 | 54 |
| Difference | -6 | +2 | +5 | +4 | +2 | -3 | +18 | +17 | -5 | -20 | -17 | -10 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Portofino | 60 | 58 | 54 | 59 | 59 | 49 |
| Crested Butte | 54 | 60 | 60 | 63 | 61 | 46 |
| Difference | -6 | +2 | +5 | +4 | +2 | -3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Portofino | 38 | 41 | 51 | 64 | 66 | 63 |
| Crested Butte | 57 | 58 | 46 | 44 | 49 | 54 |
| Difference | +18 | +17 | -5 | -20 | -17 | -10 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Portofino | 85 | 81 | 78 | 77 | 76 | 72 | 65 | 66 | 70 | 80 | 84 | 85 |
| Crested Butte | 91 | 94 | 89 | 76 | 64 | 52 | 56 | 59 | 57 | 63 | 77 | 89 |
| Difference | +7 | +13 | +12 | -1 | -12 | -21 | -9 | -7 | -14 | -17 | -7 | +4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Portofino | 85 | 81 | 78 | 77 | 76 | 72 |
| Crested Butte | 91 | 94 | 89 | 76 | 64 | 52 |
| Difference | +7 | +13 | +12 | -1 | -12 | -21 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Portofino | 65 | 66 | 70 | 80 | 84 | 85 |
| Crested Butte | 56 | 59 | 57 | 63 | 77 | 89 |
| Difference | -9 | -7 | -14 | -17 | -7 | +4 |
How both climates are changing
Both cities are warming. Each city has its own warming trend; see its trends page for the year-by-year detail. Portofino trends → · Crested Butte trends →
Methodology & sources
Portofino
Temperature & precipitation — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at Genova_sestri, about 32 km from the city centre.
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.
Crested Butte
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Crested Butte, a weather station, about 1 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.
← change Portofino · change Crested Butte → · Portofino page · Crested Butte page