No – you are right….take JMT 2018 – I went Aug 23rd to Sep 11. I had 2 days of 2 hour rains – one with hail etc – afternoon thunderstorms and no sun afterwards. Next day was glorious sun. So, I could dry things out easily. A few people reported daily rain early August JMT 2018 trips. So I lucked out. Then in 2022 – I went on JMT late July – it rained almost every day and sometimes entire night and morning and successive days where drying became an issue.
The mountains make their own weather.
Colorado definitely has those afternoon thunderstorms. But a rain pant with a poncho will work great as poncho provides nice air flow.
Best it to look at current conditions and here is what google search produced:
“Total rainfall in June in Denver is now 1.81 inches which is 1.51 inches above normal for the first four days of month. When combined with 5.53 inches of rain in May and 4.60 inches of precipitation in January through April, Denver has measured 10.13 inches of precipitation this year. That is the 13th wettest start to the year on record in the city and about 70% of the city’s average annual appreciation which is about 14.50 inches.”
So maybe a rainy CT this year? Who knows! Will have to research rainfall along the CT route….