Here's an interesting Polymarket player who specializes in weather markets.

This guy's operation goes like this: he turned $6 into $2,990 in the Atlanta temperature market, with a 24-hour return rate that looks pretty crazy—almost 500 times.
His approach isn't complicated; he just keeps an eye on the subtle differences between weather forecasts and market pricing.
For example, one day the GFS model shows a 65% chance of Atlanta hitting 38°F (about 3°C), but the corresponding bet price in the market is only $0.002, almost free.
He thinks this pricing is obviously off, so he enters the market.
As a result, the weather actually hits that range, and the price jumps from $0.002 all the way to $1, making that trade explode.
Let's look at some of his more impressive records:
· Atlanta 38-39°F range: $6 → $2,990 (entry price 0.2 cents, return +49,744%)
· New York City 34-35°F range: $40 → $1,871 (entry price 2 cents, return +4,578%)
· Seattle 52-53°F range: $536 → $4,639 (entry price 11.6 cents, return +764%)
His wallet homepage is here, with publicly available data:

Now, let's look at his overall stats:
Total historical profit: $57,136
Number of trades: 1,504
Maximum profit from a single trade: $4,103
What he's doing, in simple terms, is to find niche temperature ranges in the market where the pricing is obviously undervalued before the general public notices the specific weather forecast, and then exploit that information gap.
If you're interested in this approach and want to try following along, you can use this tool, starting from $50: