Updated

Chicago

Weather forecast · Midway (KMDW)

Tomorrow in Chicago, : high 74.0 °F, low 54.7 °F, the median of 9 free forecasts (8 for the low).

Forecasts updated (AIGFS 00Z, )Next update

74.0 / 54.7°FHigh / low · Wed 28 Oct
Source spread
70.9–78.0 °F
highs · lows 49.7–59.3
Sources
9
5 model groups
Rain
0.00 in · 2%
n 4: ENS, GEFS, GEPS, NBM calibrated
Now
61 °F
KMDW 10:53 pm
Normal
58 / 42 °F
1991–2020
Alerts
None
NWS

Markets

How each market here settles, and the number so far.

Highs/lows: Kalshi Midway (KMDW), Polymarket O'Hare (KORD). Rain: Kalshi O'Hare, Polymarket Midway. 24 km apart.

MarketSettles onTodayForecastTomorrowLast settled
Kalshi high Market →Midway KMDW · Kalshi names The Weather Company (shows NWS CLIMDW) · whole °F · midnight–midnight standard time (1 am–1 am now)The climate report can read higher (1-minute data).Today 69°F at 1:53 pmForecast 69.0°F, n 3Tomorrow 75.0°F, NBMLast settled —
Polymarket high Market →O'Hare KORD · AWC routine METARs only · 0.1 °C, half up to whole °F · local day · AWC METAR KORDCounts hourly reports only; can read under the daily max.Today 68°F at 1:51 pmForecast 68.0°F, n 3Tomorrow 73.0°F, n 10Last settled Oct 26 Polymarket 62–63°F · ours 62°F · 310/310 in 30 d
Kalshi low Market →Midway KMDW · Kalshi names The Weather Company (shows NWS CLIMDW) · whole °F · midnight–midnight standard time (1 am–1 am now)Low may come after midnight; Kalshi's day runs to 1 am.Today 54°F at 12:53 pmForecast 54.0°F, n 3Tomorrow 54.7°F, n 8Last settled —
Polymarket low Market →O'Hare KORD · AWC routine METARs only · 0.1 °C, half up to whole °F · local day · AWC METAR KORDCounts hourly reports only; can read over the daily min.Today 53°F at 5:51 amForecast 53.0°F, n 3Tomorrow 53.8°F, n 9Last settled Oct 26 Polymarket 54–55°F · ours 54°F · 310/310 in 30 d
Kalshi rain Market →O'Hare KORD · Kalshi names The Weather Company (shows NWS CLIORD) · above 0.00 in · standard-time dayToday 0.00 in so farForecast Chance <2%Tomorrow Chance 3%Last settled —
Polymarket rain Market →Midway KMDW · NWS CLIMDW · 0.01 in or more · last report by 2 pm ET next dayToday 0.00 in so farForecast Chance <2%Tomorrow Chance 2%Last settled Oct 26 Polymarket No · ours 0.00 in · 70/70 in 30 d
Kalshi rain · weekend Market →O'Hare KORD · Kalshi names The Weather Company (shows NWS CLIORD) · any rain Saturday or SundayToday No reports yet.Forecast —Tomorrow —Last settled —
Kalshi rain · October Market →O'Hare KORD · Kalshi names The Weather Company daily reports (shows NWS CLIORD) · month total, strictly above the lineToday No reports yet.Forecast —Tomorrow —Last settled —

NOAA/NWS (public domain); MET Norway, DWD, GEFS via dynamical.org (CC BY 4.0); ECCC (Open Licence); based on ECMWF data (CC BY 4.0; ECMWF accepts no liability); Market rules and results: Kalshi, Polymarket (linked; not affiliated); modified by groundhog. Receipts →

Climate day

  • KORD · Kalshi daily rain · climate day, 1 am–1 am CDT (midnight–midnight standard time)

    0.00 in so far (reports to 10:51 pm) · radar 0.00 in

    Rest of climate day: <2% of members (n 2: ENS 00Z, GEFS 00Z; raw) · 2 h left

  • KMDW · Polymarket daily rain · climate day, 1 am–1 am CDT (midnight–midnight standard time)

    0.00 in so far (reports to 10:53 pm) · radar 0.00 in

    Rest of climate day: <2% of members (n 3: ENS 00Z, GEFS 00Z, GEPS 12Z; raw) · 2 h left

Week

  • High
  • Low
  • Median
  • ~ 6-hourly
°FWed 28Thu 29Fri 30Sat 31Sun 1Mon 2Tue 3
Wed2874.0 / 54.7
Thu2968.1 / 55.6
Fri3063.0 / 48.8
Sat3160.1 / 52.4
Sun164.4 / 53.9
Mon264.5 / 54.5
Tue364.8 / 56.3

By source

SourceWed 28Thu 29Fri 30Sat 31Sun 1Mon 2Tue 3
Median74.0 / 54.768.1 / 55.663.0 / 48.860.1 / 52.464.4 / 53.9n 864.5 / 54.5n 864.8 / 56.3n 7
Source spread70.9–78.049.7–59.366.2–73.250.3–61.057.8–64.045.5–53.757.5–65.047.0–54.456.9–67.051.0–56.260.0–68.650.7–58.860.6–69.650.3–61.2
NBM-based
74/5468/5663/5164/5464/5467/55—
75/—72/6164/4965/5267/5367/5466/55
GFS-based
78/5571/5963/5063/4763/5160/5262/51
75/5968/5758/5459/5257/5361/5761/50
72/55~68/58~59/48~59/51~65/52~66/57~66/62~
ECMWF-based
73/5666/5364/4658/5265/5564/5165/56
73/5567/5064/4657/5165/5564/5165/57
71/53~68/59~58/47~57/53~65/50~64/57~66/61~
73/5468/5661/4861/5363/53~62/55~62/54~
DWD
75/5468/5464/4960/5466/5665/5966/61
NAEFS
70/54~70/62~61/49~60/54~62/55~61/55~60/54~
CMC
71/5073/5562/4958/5461/5469/5670/61

~ 6-hourly: shown, not in the median. Nearby stations: not counted.

CreditsNOAA · MET Norway · DWD · ECCC · Based on ECMWF data (CC BY 4.0) · GeoNamesAll credits
  • Source: NOAA/NWS (US Government work, public domain); NBM/MOS/GFS/AIGFS/HRRR/WPC/MRMS: NOAA NCEP/MDL/NSSL; modified by groundhog (point extraction, local-day max/min, precipitation totals and chances); not endorsed by NOAA
  • Data from MET Norway (Locationforecast 2.0), CC BY 4.0 https://creativecommons.org/licenses/by/4.0/ ; modified: local-day max/min, precipitation totals and chances
  • Quelle: Deutscher Wetterdienst (MOSMIX, CC BY 4.0; modified: local-day max/min, precipitation totals and chances)
  • Data Source: Environment and Climate Change Canada (NAEFS: CMC GEPS members) and NOAA NCEP (GEFS members); modified: member daily max/min quantiles, precipitation totals and chances
  • Based on data and products of the European Centre for Medium-Range Weather Forecasts (ECMWF); ENS read from dynamical.org's archive. CC BY 4.0 https://creativecommons.org/licenses/by/4.0/ ; modified by groundhog (point extraction, local-day max/min, ensemble quantiles, precipitation totals and chances). ECMWF does not accept any liability whatsoever for any error or omission in the data, their availability, or for any loss or damage arising from their use.
  • Place names: GeoNames (geonames.org), CC BY 4.0

Next 72 h

  • Median
  • ENS p10–p90
  • Source
  • 6-hourly
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