Kalshi goes by the thermometer at Seattle-Tacoma International Airport (KSEA). Today's high counts from 1:00 AM Oct 31 to 1:00 AM Nov 1 PDT.
Newest official high: Thu, Oct 29, posted Oct 30, 5:21 AM PDT.
Seattle so far today: the high is 41°F (hourly reading, 3:53 AM), in the 51° or below bracket. The favorite is 54° to 55° at 58¢ (Kalshi, 30 minutes late), 13° above the high so far. Trading closes at 1:00 AM PDT. 3 reports from KSEA from 1:00 AM to 4:12 AM PDT, between 40°F and 41°F; the latest 41°F at 3:53 AM.
| Bracket | Price | Note |
|---|---|---|
| 60° or above | 1¢ | |
| 58° to 59° | 2¢ | |
| 56° to 57° | 18¢ | |
| 54° to 55° | 58¢ | favorite |
| 52° to 53° | 22¢ | |
| 51° or below | 3¢ | high so far |
| Time | Reading |
|---|---|
| 3:53 AM | 41°F |
| 2:53 AM | 40°F |
| 1:53 AM | 40°F |
Which bracket will Seattle settle on today? For fun: no money, no orders, nothing sent to Kalshi. The market's own favorite usually wins, and your record sits beside it. See this week's leaderboard
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Prices (30 min late) 30 min ago· Readings 19 min ago
High so far today
41°F
hourly reading at 3:53 AM, 3 reports so far
Latest reading
41°F
taken 3:53 AM, counts toward today
Trading closes in
20 h 48 min
usually settles around 6:12 AM (median of 60 days)
| Bracket | Price | Bid | Last | Waiting to trade (bid × ask) | Traded |
|---|---|---|---|---|---|
| 60° or above | 1¢ | — | 1¢ | — × 330 | 31 |
| 58° to 59° | 2¢ | 1¢ | 2¢ | 103 × 686 | 134 |
| 56° to 57° | 18¢ | 17¢ | 18¢ | 3 × 163 | 700 |
| 54° to 55°favorite | 58¢ | 57¢ | 58¢ | 64 × 131 | 955 |
| 52° to 53° | 22¢ | 21¢ | 21¢ | 135 × 1 | 956 |
| 51° or belowhigh so far 41° | 3¢ | 2¢ | 3¢ | 149 × 68 | 700 |
40°F
Favorite 37° to 38° at 58¢ · 2° to go, down
Low so far set at 2:53 AM. Same station and day as the high; closes in 20 h 48 min.
From KSEA's NWS climate reports (via the Iowa Environmental Mesonet) and Kalshi's settlements and stored prices. Facts about past days, not forecasts.
Highest hourly reading so far at Seattle-Tacoma International Airport (KSEA): 42°F at 12:53 AM.
Polymarket's highest-priced range is 54°–55° at 49¢.
Same station as Kalshi, but Polymarket settles on the highest hourly reading, midnight to midnight local time.
Live prices in all 24 cities (these are 30 minutes late), 12 weather models' forecasts for this station (KSEA) on the chart and in a table, whether today is running hotter or cooler than they expected, and how each model has done here.
Model record: in our test the market's prices were more accurate than the model (log loss 1.26 vs 1.48 a day ahead, 0.92 vs 1.25 on the day; lower is better).
Every report from the station today (a ), in exact whole °F. “6 h max” is the station's own highest reading over the past 6 hours, which can catch a peak between hourly reports.
| Time | Reading | 6 h max | 24 h max | Report |
|---|---|---|---|---|
| 3:53 AM | 41° | METAR KSEA 311053Z 12007KT 10SM CLR 05/03 A2999 RMK AO2 SLP163 T00500028 | ||
| 2:53 AM | 40° | METAR KSEA 310953Z 12004KT 10SM CLR 04/04 A2999 RMK AO2 SLP164 T00440044 | ||
| 1:53 AM | 40° | METAR KSEA 310853Z 00000KT 8SM CLR 04/04 A2999 RMK AO2 SLP163 T00440044 53005 |
The official high isn't in yet. The final report goes out shortly after midnight standard time.
Not settled yet: Kalshi usually settles around 7 AM local the next morning.
Download every official high at KSEA (CSV): the NWS climate report's daily high since Jan 1, 2025, with its time, the normal and the record. Free, no account.
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