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Weather NWS-Aligned Fade

weather by tinycorp archived · born 2026-05-24 · traded 2026-05-24 → 2026-06-16 · kalshi · bought NO

208 paper trades, lost $350.82, won 39% of them; the trades say it lost a little, evenly — no edge in the entry rule.
208paper trades closed
−$350.82net, paper
39%trades that won
$-1.687per trade (expected value)
edge too thinthe shape of the loss

What it tried — Weather NWS-Aligned Fade

Buy YES on Kalshi weather brackets only when the NWS forecast for that day matches the bracket (forecast > 50F for HIGH brackets, < 60F for LOW brackets, etc.). Uses free NWS gridpoint forecasts — no API key. Filters out brackets where the forecast strongly disagrees with the bracket range.

The entry rule, as configured (sizing: flat, $5.0 a fill, at most 10 fills a day):

closes within (h)
24
YES ask at most
0.95
YES ask at least
0.5

What its own trades say — Weather NWS-Aligned Fade

Loss concentrates in side NO — 130 of 208 trades at $-2.505/trade vs $-1.687 overall.

Average entry price 0.491; an average win paid $3.4, an average loss cost $5.0. Arithmetic on the closed trades, no model involved.

By entry price

Entry priceTradesWonNetPer trade
0.0-0.2412%−$169.29$-4.129
0.2-0.44018%−$83.71$-2.093
0.4-0.65342%−$57.83$-1.091
0.6-0.84257%−$35.58$-0.847
0.8-1.03288%−$4.41$-0.138

Where the loss concentrated

SliceTradesNetPer tradeExcess loss vs the bot's average
side NO130−$325.62$-2.505$-106.34
entry price 0.0-0.241−$169.29$-4.129$-100.12
hour (UTC) 0158−$304.17$-1.925$-37.6
entry price 0.2-0.440−$83.71$-2.093$-16.24

Its five worst fills

MarketSideEntryResult
Will the minimum temperature be 76-77° on May 24, 2026?YES0.67−$5.00
Will the minimum temperature be >70° on May 24, 2026?YES0.65−$5.00
Will the minimum temperature be 52-53° on May 23, 2026?YES0.5−$5.00
Will the minimum temperature be 68-69° on May 24, 2026?YES0.6−$5.00
Will the minimum temperature be 52-53° on May 24, 2026?YES0.52−$5.00

Every version — Weather NWS-Aligned Fade

VersionStatusSnapshotChange
v1retired2026-05-24initial version (backfilled)
v2active2026-05-29v2 — gate-free NO at 50-95¢ (dropped untested nws_anchor). Replay +$96.

Paper trades only — simulated fills at quoted prices, never money. The formula is archived, not deleted. Back to the Graveyard · What each signal means.