forecast peak27°DWD ICON
climatology alone suggests24°today is running cool for the date
typical further climb+4.0°
usually warmestsunset 19:22
00040812162024
now
chance of each range today's high, live
updates with each report
rangeestimatemarket
≤23°C32%0¢
24°C30%1¢
25°C20%10¢
26°C14%17¢
27°C2%36¢
28°C1%32¢
29°C<1%16¢
30°C<1%11¢
31°C<1%1¢
32°C<1%0¢
≥33°C<1%0¢
Our estimate, from JMA's forecast made early this morning (24.0° after taking
out its usual 1.9° cold lean here), narrowed by what FACT has reported so far and by how much
it usually still climbs after this hour. Replayed on 19 past days (967 station-days): ranges it gave about 30% happened about 30% of the time. Its most likely range came true about a third of the time at 08:00, two thirds at 14:00 and nearly always by 17:00.
The market price is the crowd's view; neither is advice.
live temperature, 24h
°C local
actual
dewpoint
ecmwf
usual range
station report raw METAR
FACT, 8 obs
local
temp
dew
wind
cloud
wx
09:00
20°
15°
200/10
CAVOK
—
08:00
19°
15°
190/13
SCT008
—
07:27
18°
16°
180/11
SCT008
—
07:00
18°
16°
190/12
BKN008
—
06:57
18°
16°
190/12
BKN008
—
06:00
17°
15°
190/11
BKN010
—
05:00
17°
16°
200/12
BKN010
—
04:57
17°
16°
200/12
BKN010
—
what the numbers say right now
evaluated at build
current state
✓
METAR 20°C at 09:00 local, inside the usual range for the last 14 days (19°C–22°C)
FACT, tracking climatology
↑
This-hour → peak climb median +1.0°C (n=14) — projects to ~21°C @ 14:00 if pattern holds
based on noon→peak deltas in 14d window
~
Climb (last ~90min): +1.3°C/h, dewpoint falling (15°C→15°C)
drying — accelerates warming
!
Clock test: METAR (20°C @ 09:00) with climatology suggests peak ≥25°C possible
14d records show 5/14 days reached ≥25°C
●
Today vs ECMWF: tracking forecast (+0.0°C)
ECMWF ens-mean 30°C
pws network
CWOP volunteer stations within 25km, refreshed with the page
stations temperature + wind
loading…
cool
hot
colour = deviation from network median, arrow = wind direction, length = speed
climatology last 14 days
FACT, n=14
Cloud cover layers — METAR reports the lowest broken/overcast layer first. Higher number = more sky covered.
SKC / CLR / NCDclear sky, no significant cloudsFEW1–2 oktas (12–25% cover), light scatterSCT3–4 oktas (37–50%), scatteredBKN5–7 oktas (62–87%), broken (mostly cloudy)OVC8 oktas (100%), overcastVVvertical visibility (sky obscured by fog/precip)+CBcumulonimbus suffix, thunderstorm cell+TCUtowering cumulus, pre-storm vertical developmentBKN014 = broken cloud at 1,400 ft. BKN014+CB = broken cloud + cumulonimbus present.
2026-11-10
this hour median
20.0°C
usual 19.0°C–22.0°C
typical 14:00
24.0°C
usual 21.0°C–25.0°C
noon → peak climb
+1.0°C
how hot it gets last 14 days
33°C
14d high, 2026 11 09
avg high24.0°C
usual range21.0°C – 25.0°C
days ≥25°C5 / 14
days ≥26°C3 / 14
days ≥27°C3 / 14
when it peaks where the daily maximum usually lands
11:00–14:00
where the high landed on 80% of days
On dates near this one, this station's daily maximum fell between 11:00 and 14:00 local on 80% of 136 days, most often around 13:00.
The five-year mean curve is highest at 14:00 — that is when the average day is warmest, which runs later than the typical day's own peak.
Use the noon→later climb panel on the right to map current readings to expected peak.
afternoon climb noon to the peak
5-year mean for this date
12:00 → 13:00+0.3°C mean, 5y, n=67
12:00 → 14:00+0.5°C mean, 5y, n=67
12:00 → 15:00+0.1°C mean, 5y, n=67
12:00 → 16:00-0.5°C mean, 5y, n=67
12:00 → 17:00-1.3°C mean, 5y, n=67
12:00 → 18:00-2.6°C mean, 5y, n=66
12:00 → 19:00-3.9°C mean, 5y, n=65
12:00 → 20:00-5.2°C mean, 5y, n=65
today @ 12:00awaiting (now 09:00)
implied peak~24°C (clim)
vs ecmwf 30°C
station intelligence 5 years of IEM observations
FACT
heating passport climb to peak
61 observations per hour, 5 years, ±7 days
20° now at 09:00typically +4.0° more (p90 +7.0°)expected peak 24°peak already set on 3% of days by now
hrtemp
mean
already peaked
0017°+7.7°0%
0117°+7.9°0%
0216°+8.3°0%
0316°+8.6°0%
0416°+8.6°0%
0515°+9.2°0%
0615°+9.2°0%
0717°+7.5°0%
0819°+5.6°0%
0921°+4.0°3%
1022°+2.7°6%
1123°+1.8°18%
1223°+1.0°45%
1324°+0.7°67%
1424°+0.2°88%
1524°+0.1°97%
1623°+0.0°100%
1722°+0.0°100%
1821°+0.0°100%
1919°+0.0°100%
2018°+0.1°100%
2118°+0.1°100%
2217°+0.2°100%
2317°+0.0°100%
cloud regime Sep–Nov, against this date's normal
nowclearnot enough days on record here to say anything about it
coldernormalwarmer
few-1.1°65d
scattered-2.0°73d
broken-2.9°66d
Each bar is the middle half of days (25th–75th percentile) under
that sky, with a tick at the mean; the centre line is this station's normal for the date.
Sky state is the mean cover across the hours the day warms (09–15 local), not a
single reading. An indicator, not a cause — where a sky state is rare it
tends to arrive with the system that made it rare, so a large figure is usually the
weather pattern showing through the cloud rather than the cloud itself. Greyed rows are
not separable from normal.
wind regime Sep–Nov, against this date's normal
nowS at 10kt+0.1° across 192 days (-0.4 to +0.6) — not separable from normal. Treat as no signal today.
coldernormalwarmer
SE+2.0°20d
VARIABLE+1.1°13d
SW+0.9°42d
S+0.1°192d
N-0.4°19d
NW-1.2°80d
W-1.9°10d
Each bar is the middle half of days (25th–75th percentile) for
that direction, with a tick at the mean; the centre line is this station's normal for the
date. Direction is where the wind came from. An indicator, not a cause -- a
direction arrives with a weather system, and it is the system you are seeing. Greyed rows
are not separable from normal. ⚠ “now” is the latest single observation,
while the history buckets whole days (09–15 local averaged), so today may still
finish in a different sector.
hourly profile, 14d median
local time
| local | med | min | max | p25 | p75 |
|---|---|---|---|---|---|
| 00:00 | 17°C | 15°C | 18°C | 16°C | 18°C |
| 01:00 | 17°C | 15°C | 18°C | 16°C | 18°C |
| 02:00 | 17°C | 14°C | 18°C | 15°C | 18°C |
| 03:00 | 16°C | 12°C | 18°C | 15°C | 17°C |
| 04:00 | 16°C | 11°C | 18°C | 15°C | 17°C |
| 05:00 | 15°C | 10°C | 18°C | 14°C | 16°C |
| 06:00 | 15°C | 10°C | 18°C | 14°C | 16°C |
| 07:00 | 17°C | 14°C | 18°C | 16°C | 18°C |
| 08:00 | 19°C | 14°C | 23°C | 17°C | 19°C |
| 09:00 | 20°C | 15°C | 25°C | 19°C | 22°C |
| 10:00 | 21°C | 18°C | 31°C | 19°C | 22°C |
| 11:00 | 22°C | 18°C | 31°C | 20°C | 24°C |
| 12:00 | 23°C | 18°C | 32°C | 20°C | 25°C |
| 13:00 | 23°C | 19°C | 33°C | 21°C | 25°C |
| 14:00 | 23°C | 19°C | 33°C | 21°C | 25°C |
| 15:00 | 23°C | 19°C | 32°C | 20°C | 25°C |
| 16:00 | 23°C | 19°C | 28°C | 20°C | 25°C |
| 17:00 | 22°C | 18°C | 28°C | 19°C | 24°C |
| 18:00 | 21°C | 18°C | 25°C | 19°C | 23°C |
| 19:00 | 19°C | 17°C | 23°C | 18°C | 21°C |
| 20:00 | 18°C | 16°C | 22°C | 18°C | 19°C |
| 21:00 | 19°C | 16°C | 21°C | 17°C | 19°C |
| 22:00 | 18°C | 15°C | 20°C | 17°C | 18°C |
| 23:00 | 18°C | 15°C | 20°C | 16°C | 18°C |
observed highs last 14 days
Iowa Environmental Mesonet
11-09
33°C
—
11-08
28°C
—
11-07
19°C
—
11-06
21°C
—
11-05
22°C
—
11-04
30°C
—
11-03
25°C
—
11-02
21°C
—
11-01
21°C
—
10-31
24°C
—
10-30
25°C
—
10-29
24°C
—
10-28
23°C
—
10-27
23°C
—
forecast record what our morning pick said
last 14 days
daymodelsaid
highmiss
08-11JMA28°28°-0.3°
07-11JMA18°19°-0.9°
06-11JMA20°21°-0.6°
05-11ECMWF22°22°+0.3°
04-11ECMWF33°30°+2.9°
03-11ECMWF27°25°+2.3°
02-11ECMWF20°21°-0.6°
01-11ECMWF21°21°-0.4°
31-10ECMWF24°24°+0.2°
30-10ECMWF25°25°+0.4°
29-10ECMWF31°24°+6.9°
28-10ECMWF25°23°+1.6°
27-10ECMWF25°23°+1.5°
26-10ECMWF21°21°+0.1°
Each morning the site picks the model that has missed least here lately and takes out
its usual lean; this is that forecast, made before the day's heating, beside what the station recorded.
Over all 30 scored days: a typical miss of 1.1°, within a degree on
67% of days.
what each model says daily maximum
ordered by accuracy at this station
models disagree by10.1°across 7 models today
modeltoday
tomorrow
its typical miss
DWD ICON26.7°25.5°0.94°most accurate here
ECMWF IFS31.9°25.7°1.02°
CMA GRAPES25.4°26.0°1.07°
Environment Canada GEM29.9°25.4°1.17°
UK Met Office30.6°23.5°1.18°
NOAA GFS28.7°26.0°1.26°
JMA GSM21.8°21.9°2.09°
Ordered by each model's track record at this station, not by a global ranking —
the best model is not the same everywhere, and the median gap between a station's best and worst model is 1.2°C. A wide disagreement means
the models have found different weather, not that the average of them is right.
model skill which model to trust here
vs observed station max
model
accuracy
typical miss
warm / cold
within 1°
DWD ICON0.94°+0.05°61%
ECMWF IFS1.02°+0.32°66%
CMA GRAPES1.07°-0.13°66%
Environment Canada GEM1.17°+0.44°55%
UK Met Office1.18°+0.80°63%
NOAA GFS1.26°+0.98°53%
JMA GSM2.09°-2.09°24%
Typical miss is how far off the model usually is, in either direction — lower
is better. Warm / cold is which way it leans: a model can be accurate on average and
still run consistently warm here. Within 1° is how often it landed inside a degree.
Scored against what this station actually recorded, over 38 days.
forecast TAF, valid 10/06Z→11/12Z
forecast max27°at 10/11Zmin 16°issued by the national met service
base10/06Z→11/12Z180° 13kt; 10km+; scattered at 1,200ft
from10/08Z onwards180° 13kt; CAVOK (ceiling and visibility OK); no cloud below 5,000ft
becoming10/16Z→10/18Zbroken at 800ft
becoming10/21Z→10/23Zvariable 3kt
from11/07Z onwards340° 6kt; 10km+; broken at 1,300ft
from11/09Z onwards300° 10kt; 10km+; broken at 2,000ft
TAF FACT 100400Z 1006/1112 18013KT 9999 SCT012 TX27/1011Z TN16/1104Z FM100800 18013KT CAVOK BECMG 1016/1018 BKN008 BECMG 1021/1023 VRB03KT FM110700 34006KT 9999 BKN013 FM110900 30010KT 9999 BKN020
market vs climatology today
67 past days near this date
max
marketclimate
days
≤23°C0%46%31/67
24°C1%12%8/67
25°C10%9%6/67
26°C17%6%4/67
27°C36%4%3/67
28°C32%6%4/67
29°C16%7%5/67
30°C11%3%2/67
31°C1%1%1/67
32°C0%1%1/67
≥33°C0%3%2/67
Climatology is what this station actually recorded on this date across five years of IEM
observations, bucketed on the rounded whole degree exactly as the market settles.
It is a base rate, not a forecast — it knows nothing about today's weather,
and the market does. Where the two differ, the market usually has the better information.
Market column sums to 125% and climatology to 100%.