Historical weather data, all-time temperature records, and monthly climate averages for Westlake, OH. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Westlake sits right in that unpredictable shoulder season — historically, highs land around 53° but have swung anywhere from a balmy 81° (1988) to a bitter 22° overnight low back in 1944. Nearly half of all April 5ths have seen some form of precipitation, and there's still a 1-in-6 chance of snow.
Westlake's weather has real extremes baked into its history — from a sweltering 104° in June 1988 to a brutal -20° in January 1994, a 124-degree spread between the worst of summer and winter. A single September storm in 1996 dropped 4.59 inches of rain, and a February 1993 snowstorm buried the area under 13.6 inches in one day.
Westlake peaks in the third week of July with average highs around 84°, then bottoms out mid-January at a frigid 33°. The wettest stretch runs mid-to-late June, so late summer and early fall — when highs are still in the 70s and rainfall eases off — is the sweet spot for visiting.