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The Interior Plateau: Because the Coast Mountains act as a barrier to the moist westerly air flow, the Interior Plateau (immediately to the east of this mountain chain) has a much drier and more continental climate. Summers tend to be warm and dry; winters cooler, but less moist. The southern interior, including the Okanagan, Similkameen, and Thompson River valleys, experiences BC's hottest summers, with temperatures often in the 30°C range/86-102°F, and occasionally rising above 40°C/104°F. Kamloops, for example, has an average maximum of -1°C/30°F in January and 28°C/82°F in July, and just 279mm/11in of annual precipitation. Areas further north on the Interior Plateau (Williams Lake and Prince George areas) tend to have a moist, cooler regime than that of the southern portions of the plateau.

<font size="6" face="Arial, Helvetica, sans-serif">Osoyoos</font>







<font size="1" face="Verdana, Arial, Helvetica, sans-serif">Osoyoos, British Columbia</font>



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