PolyWeatherLab
What Polymarket priced, what the weather models said, and what actually happened.

Jeddah lows

The market this page measures: lowest temperature in Jeddah on 28 September 2026 on Polymarket
Whatever the market priced for 2026-09-28, what every weather model forecasts for the same day, and what actually happened, all in °C. The gap column is how far a model sits from the market: above the market it ran warm, below it ran cool. Resolves on station OEJN.
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models say
28.7 °C
avg of 8 models
market's pick
28.0 °C
75.00% on this strike
gap
-2.13 °C
spread 2.9 °C
actual
not resolved yet

Market odds for 2026-09-28

What Polymarket is paying for each temperature. Each price is the market's probability that the day lands in that strike, so they add up to about 100%. Latest reading 2026-09-28 10:25 UTC, shown in °C.
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temperature °Codds
24.0 °C8.00%
25.0 °C47.00%
26.0 °C49.50%
27.0 °C19.50%
28.0 °C75.00%
29.0 °C0.05%
30.0 °C0.05%
31.0 °C0.05%
32.0 °C0.05%

Every forecast for 2026-09-28

Each model's newest reading for this day, in °C, taken 2026-09-28 06:40 to 10:00 UTC. Gap is the difference from the market, in degrees: a model above the market ran warm, one below ran cool.
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modelforecast °Cgap vs market °C
THE MARKET26.5––
dwd icon global27.4+0.9
ecmwf ifs02527.6+1.1
best match28.0+1.5
ukmo seamless28.0+1.5
meteofrance arpege world28.7+2.2
cma grapes global29.1+2.6
ncep gfs global30.2+3.7
jma gsm30.3+3.8

How the forecasts moved

Every reading we hold for 2026-09-28, newest column first, in °C. The bracket under each time says how long before the day that reading was taken (or after, once the day has started), so the table reads right to left as the day approached. A model still moving in the last day is a model that has not settled, and that is the one to distrust. Older readings are kept but not shown.
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model09-28 10:00 (13h after)09-28 08:00 (11h after)09-28 07:30 (11h after)09-28 07:00 (10h after)09-28 06:40 (10h after)09-28 06:30 (10h after)
THE MARKET26.526.626.626.626.526.5
best match–––28.027.3–
cma grapes global––––29.129.1
dwd icon global––––27.4–
ecmwf ifs025–27.6––27.1–
jma gsm30.3–––30.4–
meteofrance arpege world––––28.7–
ncep gfs global––––30.2–
ukmo seamless––28.0–27.5–