Well, in version 1.05.42, I feel ok with random mud in the 1st seventeen turns. It does hurt, yes, but it should. My friend and I have played about 15 games so far. Every game I have been Axis (14), rain on turn 3. In 11 games, I have had rain on Turn 3, followed by rain in an adjacent weather zone the following turn, so a rolling weather front. I am still taking Leningrad, Moscow should be pretty safe, as it saved rain in Northern Russia until PZ Groups 2 and 3 begin an offensive there. Calculate the odds of that kind of weather!
So, I am believing random weather is a good thing, and if you get clear all 17 turns, you can make hay all the way into Leningrad and Moscow (or close to it). Since I only play official patches, the changes to fort digging is the biggest relief, no longer does it feel I am playing World War I.
I do suppose I would support the option for 1941 historical weather (that includes winter too). I was thinking of that way back in version 1.03, as I thought that was the biggest drawback to playing then.