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St. Louis forecast

Forecast Highs Lows Rain Model accuracy

St. Louis, Lambert station · using data from 2026-10-15T12:51 UTC · from the forecast models, not an official forecast

Today · Oct 15
thunderstorms79° / 61°

models 76–81°

Rain 98% · 0.69 in

Model agreement
High poor Low poor Rain good low 58–68°
Tomorrow · Oct 16
drizzle63° / 48°

models 58–70°

Rain 39% · 0.03 in

Model agreement
High poor Low poor Rain poor GEM 58° to ECMWF 70°

What changed Tue Oct 20: Models now agree — highs 66–74°, closest to the middle camp

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After tomorrow

Model agreement

How to read this

The big number is our blend of every model, each corrected by how it has verified here. Where there is no blend yet, it is the middle model's.

Under it, the range is the lowest and highest high the forecast models give for the day. Where they disagree a lot, the two models at the ends are named.

Rain is the middle model's chance of rain and the middle model's total.

Model agreement is how close the models' forecasts for one day sit to each other once each model's usual lean at the place is set aside, judged separately for the high, the low and rain: good, fair or poor against how far apart they usually are that many days out, and for rain against the band of chances where a plan changes.

These are the numbers from the models' last run we stored, at the time above. They are not an official forecast, and this page carries no weather warnings: for those, see the National Weather Service.

SatOct 17
clear
59° / 41°55–61°
0%
High good Low fair Rain good
SunOct 18
clear
65° / 41°62–69°
0%
High good Low poor Rain good low 33–49°
MonOct 19
cloudy
69° / 44°64–72°
0%
High good Low poor Rain good low 37–54°
TueOct 20
cloudy
74° / 48°66–74°
0%0–19%
High good Low poor Rain good low 37–59°
WedOct 21
partly cloudy
77° / 51°70–76°
5%0–25%
High good Low poor Rain good low 39–59°
ThuOct 22
clear
78° / 53°72–78°
4%0–20%
High good Low poor Rain good low 37–61°
FriOct 23
partly cloudy
80° / 54°71–81°
14%0–19%
High fair Low poor Rain good low 41–62°
Show all 12 days
SatOct 24
cloudy
79° / 57°68–81°
17%
High fair Low good Rain good
SunOct 25
partly cloudy
74° / 53°62–82°
18%
High poor Low fair Rain good ECMWF 62° to AIFS 82°
MonOct 26
cloudy
72° / 55°60–76°
10% · 0.06 in
High fair Low poor Rain good low 47–62°
TueOct 27
cloudy
75° / 57°63–79°
18% · 0.01 in13–23%
High fair Low poor Rain good low 48–63°
WedOct 28
cloudy
73° / 58°63–73°
20% · 0.01 in
High good Low poor Rain good low 47–66°

Going deeper

Each model's high, day by day → Each model's low → Each model's rain → Which models have been right here →