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Portofino vs Crested Butte
Comparing Portofino change · Crested Butte change
Portofino is the warmer of the two — about 27°F on the annual average; Portofino is the wetter, with 14 in 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 27°F on the annual average.
Precipitation
Portofino is the wetter — about 14 in 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 (°F) Portofino runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Portofino | 54 | 55 | — | 64 | — | 77 | 82 | 83 | 77 | 69 | 61 | 56 |
| Crested Butte | 26 | 30 | 38 | 47 | 58 | 71 | 76 | 74 | 66 | 55 | 40 | 27 |
| Difference | -28 | -25 | — | -18 | — | -6 | -6 | -9 | -11 | -14 | -21 | -29 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Portofino | 54 | 55 | — | 64 | — | 77 |
| Crested Butte | 26 | 30 | 38 | 47 | 58 | 71 |
| Difference | -28 | -25 | — | -18 | — | -6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Portofino | 82 | 83 | 77 | 69 | 61 | 56 |
| Crested Butte | 76 | 74 | 66 | 55 | 40 | 27 |
| Difference | -6 | -9 | -11 | -14 | -21 | -29 |
Avg low (°F) Portofino runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Portofino | 43 | 44 | 48 | 53 | — | 66 | 71 | 71 | 65 | 58 | 51 | 45 |
| Crested Butte | -6 | -2 | 7 | 19 | 28 | 34 | 39 | 39 | 31 | 22 | 9 | -4 |
| Difference | -49 | -45 | -40 | -33 | — | -32 | -31 | -32 | -34 | -36 | -41 | -49 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Portofino | 43 | 44 | 48 | 53 | — | 66 |
| Crested Butte | -6 | -2 | 7 | 19 | 28 | 34 |
| Difference | -49 | -45 | -40 | -33 | — | -32 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Portofino | 71 | 71 | 65 | 58 | 51 | 45 |
| Crested Butte | 39 | 39 | 31 | 22 | 9 | -4 |
| Difference | -31 | -32 | -34 | -36 | -41 | -49 |
Precipitation (in) Portofino runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Portofino | 2.9 | 2.2 | 2.2 | 2.8 | — | 1.9 | 1 | 2.2 | 4.7 | 5.9 | 8 | 3.5 |
| Crested Butte | 2.7 | 2.5 | 2.1 | 2 | 1.5 | 0.9 | 2 | 2 | 1.9 | 1.7 | 2 | 2.3 |
| Difference | -0.1 | +0.4 | -0.1 | -0.8 | — | -0.9 | +1 | -0.3 | -2.8 | -4.3 | -6 | -1.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Portofino | 2.9 | 2.2 | 2.2 | 2.8 | — | 1.9 |
| Crested Butte | 2.7 | 2.5 | 2.1 | 2 | 1.5 | 0.9 |
| Difference | -0.1 | +0.4 | -0.1 | -0.8 | — | -0.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Portofino | 1 | 2.2 | 4.7 | 5.9 | 8 | 3.5 |
| Crested Butte | 2 | 2 | 1.9 | 1.7 | 2 | 2.3 |
| Difference | +1 | -0.3 | -2.8 | -4.3 | -6 | -1.2 |
Snowfall (in)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Portofino | — | — | — | — | — | — | — | — | — | — | — | — |
| Crested Butte | 41.7 | 35.3 | 27.3 | 18 | 6.9 | 0.3 | 0 | 0 | 1 | 8.1 | 26.1 | 34.6 |
| Difference | — | — | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Portofino | — | — | — | — | — | — |
| Crested Butte | 41.7 | 35.3 | 27.3 | 18 | 6.9 | 0.3 |
| Difference | — | — | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Portofino | — | — | — | — | — | — |
| Crested Butte | 0 | 0 | 1 | 8.1 | 26.1 | 34.6 |
| 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.
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