suislanchez / polymarket-kalshi-weather-bot
Repository metadata checked 2026-09-23. GitHub was accessible; latest repository push: 2026-03-02. This does not verify current trading compatibility, security, or returns.
What it does
Trades Kalshi KXHIGH temperature markets plus Polymarket. Uses 31-member GFS ensemble forecasts via Open-Meteo plus BTC 5-min microstructure signals. 15% Kelly sizing capped at 5% of bankroll and $75–100 per trade. React 3-column dashboard (signals, weather, trades) with FastAPI backend; Brier score tracking; simulation mode with virtual bankroll and equity curves. Reported max profit of $1.8k.
What we learned from it
ensemble forecasts crush single-model forecasts on Kalshi weather markets. The 31-member GFS ensemble is free via Open-Meteo. The Brier score tracking inside the dashboard — explicit measurement of forecast calibration — is what separates serious weather bots from beginners.
Find the author
- Repository: github.com/suislanchez/polymarket-kalshi-weather-bot
- GitHub profile: @suislanchez
- Twitter/X: @iamsuislanchez
- Website / blog: suislanchez.com
- Author bio: Hi I'm J. Luis, im passionate about building and iterating and scrapping and repeating Berkeley 25' CS + DS
Get the free weekly Kalshi flow report
One email every Monday with the past week's Kalshi activity: the largest fills, where size kept accumulating, the biggest movers, and the most traded markets. Numbers and tickers — no picks, no predictions.
You're on the list. The next report goes out Monday.
Bring a strategy. Watch it become a bot.
Join the free live build on September 29 at 6:00 PM Pacific. Bring a market and a rule, or just watch. We’ll build a draft, review the workflow, demonstrate paper mode, and answer your questions.
We'll email the calendar invite and reminders for this webinar. Registering does not create an account. See our Privacy Policy.
Don't want to maintain your own bot?
Bot for Kalshi is the no-code platform for automated prediction-market trading — visual builder, signals, encrypted credentials, kill switch. The infrastructure these open-source projects build, ready to use.
One plan includes the visual builder, paper and live modes, hosted execution, and risk controls. Cancel anytime.