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Castries vs Chicago
Comparing Castries change · Chicago change
Castries is the warmer of the two — about 16°C on the annual average; Castries is the wetter, with 911 mm more rain a year, and Castries the sunnier.
How the seasons compare
The differences between Castries and Chicago, in everyday terms.
Summers
Chicago has hotter summers
Castries: Warm
Chicago: Hot
Winters
Castries has far milder winters
Castries: Stays warm
Chicago: Very cold
Rain & snow
Castries is wetter
Castries: Very wet
Chicago: Wet
Sky
Castries is sunnier
Castries: Fairly sunny
Chicago: Often cloudy
Month-by-month charts
Temperature
Castries is the warmer of the two — about 16°C on the annual average.
Precipitation
Castries is the wetter — about 911 mm more across the year.
Clear skies
Castries has the clearer skies — the higher line.
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) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 27 |
| Chicago | 1 | 3 | 9 | 17 | 23 | 29 | 32 | 30 | 27 | 18 | 10 | 3 |
| Difference | -26 | -24 | -18 | -11 | -5 | +1 | +3 | +2 | -2 | -10 | -18 | -24 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 27 | 27 | 27 | 28 | 28 | 28 |
| Chicago | 1 | 3 | 9 | 17 | 23 | 29 |
| Difference | -26 | -24 | -18 | -11 | -5 | +1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 28 | 29 | 29 | 29 | 28 | 27 |
| Chicago | 32 | 30 | 27 | 18 | 10 | 3 |
| Difference | +3 | +2 | -2 | -10 | -18 | -24 |
Avg low (°C) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 26 |
| Chicago | -10 | -8 | -2 | 4 | 10 | 15 | 18 | 17 | 13 | 6 | -0 | -6 |
| Difference | -35 | -33 | -28 | -22 | -17 | -12 | -9 | -10 | -15 | -22 | -28 | -32 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 26 | 25 | 25 | 26 | 27 | 27 |
| Chicago | -10 | -8 | -2 | 4 | 10 | 15 |
| Difference | -35 | -33 | -28 | -22 | -17 | -12 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 27 | 28 | 28 | 28 | 27 | 26 |
| Chicago | 18 | 17 | 13 | 6 | -0 | -6 |
| Difference | -9 | -10 | -15 | -22 | -28 | -32 |
Precipitation (mm) Castries runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 | 216 | 291 | 224 | 246 | 243 | 149 |
| Chicago | 58 | 51 | 64 | 105 | 126 | 118 | 104 | 113 | 88 | 93 | 69 | 61 |
| Difference | -55 | -25 | -3 | +15 | +13 | -15 | -112 | -178 | -136 | -153 | -173 | -88 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 113 | 76 | 66 | 90 | 114 | 134 |
| Chicago | 58 | 51 | 64 | 105 | 126 | 118 |
| Difference | -55 | -25 | -3 | +15 | +13 | -15 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 216 | 291 | 224 | 246 | 243 | 149 |
| Chicago | 104 | 113 | 88 | 93 | 69 | 61 |
| Difference | -112 | -178 | -136 | -153 | -173 | -88 |
Cloud cover (%) Chicago runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 | 50 | 46 | 51 | 51 | 46 | 41 |
| Chicago | 70 | 70 | 69 | 67 | 66 | 59 | 52 | 51 | 50 | 60 | 67 | 70 |
| Difference | +31 | +32 | +27 | +18 | +14 | — | +3 | +5 | -1 | +8 | +21 | +30 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 38 | 39 | 42 | 49 | 52 | 59 |
| Chicago | 70 | 70 | 69 | 67 | 66 | 59 |
| Difference | +31 | +32 | +27 | +18 | +14 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 50 | 46 | 51 | 51 | 46 | 41 |
| Chicago | 52 | 51 | 50 | 60 | 67 | 70 |
| Difference | +3 | +5 | -1 | +8 | +21 | +30 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 77 |
| Chicago | 86 | 83 | 79 | 76 | 76 | 77 | 76 | 74 | 72 | 74 | 80 | 86 |
| Difference | +11 | +9 | +4 | -1 | -1 | -2 | -3 | -5 | -6 | -5 | +1 | +9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Castries | 76 | 75 | 75 | 76 | 77 | 79 |
| Chicago | 86 | 83 | 79 | 76 | 76 | 77 |
| Difference | +11 | +9 | +4 | -1 | -1 | -2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Castries | 79 | 79 | 79 | 79 | 79 | 77 |
| Chicago | 76 | 74 | 72 | 74 | 80 | 86 |
| Difference | -3 | -5 | -6 | -5 | +1 | +9 |
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. Castries trends → · Chicago trends →
Both cities' Köppen climate types are projected to hold steady through 2099 (SSP2-4.5).
Methodology & sources
Castries
Temperature — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Precipitation — 1991–2020 normals computed from 10 years of daily observations at LE Lamentin, a weather station, about 66 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.
Chicago
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Little Red School House (NOAA GHCN station USC00115110), about 25 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.
← change Castries · change Chicago → · Castries page · Chicago page