Today and Friday, a Colorado low will bring rain and thunderstorms to the valley. The warm front associated with this low will lead to widespread rain and possible thunderstorms with lightning in the north.
Most of the rain is expected to fall during the first half of the day, with the rain moving into Canada by early afternoon. Isolated showers or thundershowers will continue into the afternoon and evening, followed by a cold front with gusts over 30 mph from the northwest.
A significant temperature range is expected in the valley, with warmer temperatures in the south (60s to low 70s) and cooler temperatures in the north (50s and 60s) due to ongoing rain.
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Author's summary: Rain and thunderstorms expected today and Friday.