A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
| Location | Type | Continent | Website |
| Ibiza | Islands | Europe | weatheribiza.com |
| Idaho | Area | North America | weather-idaho.com |
| Illinois | Area | North America | weather-illinois.com |
| Indiana | Area | North America | weather-indiana.com |
| Indiana | Area | North America | weatherindiana.com |
| Iowa | Area | North America | weather-iowa.com |
| Iqaluit - Canada | City | North America | iqaluit.weather-in-canada.com |
| Ireland - Indiana | City | North America | indiana.weather-ireland.com |
| Ireland - Mississippi | City | North America | mississippi.weather-ireland.com |
| Ireland - Texas | City | North America | texas.weather-ireland.com |
| Ireland - West Virginia | City | North America | westvirginia.weather-ireland.com |
| Isla Margarita | Islands | South America | weatherislamargarita.com |
| Islamabad | City | Asia | weatherislamabad.com |
| Istanbul | City | Asia | weatheristanbul.com |
| Istria | Area | Europe | weatheristria.com |
| Italy - Texas | City | North America | texas.weather-italy.com |
| Izmir - Turkey | City | Europe | izmir.weather-turkey.com |
