Edit: Nvrmnd the mod I was going to suggest is broken and needs updated
Update: I did find some cheats (you need a mod to use them) but have not verified it yet...I'm going to have to check this out for adjusting weather for public lot purposes...I guess this can be used until there is something better:
There is a cheat mod that will make these cheats work. You must have the mod first. (I double checked) Mod found here:
https://patreon.com/posts/cheat-fix-for-22697405testingcheats on (of course)
weather.start_weather_event weather_sunny_cool - Makes the weather Sunny and Cool (replace cool with cold if you like)
weather.start_weather_event weather_sunny_warm - Makes the weather Sunny and Warm (replace warm with hot if you like)
weather.start_weather_event weather_cloudy_cool - Makes the weather Cloudy and Cool (replace cool with cold if you like)
weather.start_weather_event weather_cloudy_warm - Makes the weather Cloudy and Warm (replace warm with hot if you like)
weather.start_weather_event weather_sunny_freezing - Makes the weather Sunny but dangerously cold
weather.start_weather_event weather_sunny_burning - Makes the weather Sunny and dangerously hot
weather.start_weather_event weather_heatwave - Makes a heatwave (dangerously hot)
weather.start_weather_event weather_rain_light_cool - Makes the weather a light rain and cool (replace cool with warm or cold)
weather.start_weather_event weather_rain_storm_cold - Makes a thunderstorm (replace cold with warm if you like)
weather.start_weather_event weather_rain_heavy_warm - Makes the weather heavy rain and warm (replace with cool or cold if you like)
weather.start_weather_event weather_snow_light_freezing - Makes the weather snowy but really cold
weather.start_weather_event weather_snow_heavy_freezing - Makes the weather heavy snow and cold
weather.start_weather_event weather_sunshower_hot - Sunshowers
weather.start_weather_event weather_snow_thundersnow - Thundersnow!
Update: Just verified that the cheats work with the mod. Just made it snow in Strangerville in summer, so yup, definitely works.