forecast peak3°ECMWF IFS
climatology alone suggests7°today is running warm for the date
typical further climb+5.9°
usually warmestsunset 17:36
00040812162024
now
chance of each range today's high, live
updates with each report
rangeestimatemarket
≤0°C0%0¢
1°C3%0¢
2°C7%11¢
3°C14%30¢
4°C18%37¢
5°C29%14¢
6°C18%4¢
7°C9%2¢
8°C2%0¢
9°C1%0¢
≥10°C<1%0¢
Our estimate, from ECMWF's forecast made early this morning (3.4° after taking
out its usual 0.3° cold lean here), narrowed by what LTAC 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
LTAC, 8 obs
local
temp
dew
wind
cloud
wx
10:20
1°
-3°
—
BKN100
—
09:50
0°
-3°
050/03
BKN100
—
09:20
0°
-3°
010/02
BKN100
—
08:50
-1°
-3°
—
BKN100
—
08:20
-1°
-4°
330/03
BKN100
—
07:50
-1°
-4°
—
BKN100
—
07:20
-2°
-4°
—
BKN100
—
06:50
-2°
-4°
330/04
BKN100
—
what the numbers say right now
evaluated at build
current state
▼
METAR 1°C at 10:20 local, -9.0°C vs 14d-median (10°C this hour)
LTAC, running behind climatology
↑
This-hour → peak climb median +2.0°C (n=14) — projects to ~3°C @ 15:00 if pattern holds
based on noon→peak deltas in 14d window
~
Climb (last ~90min): +1.3°C/h, dewpoint stable (-3°C→-3°C)
stable dewpoint — no humidity drift
!
Clock test: METAR (1°C @ 10:20) with climatology suggests peak ≥17°C possible
14d records show 6/14 days reached ≥17°C
●
Today vs ECMWF: running -9.0°C behind trajectory
ECMWF ens-mean 5°C, current 1°C @ 10:20
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
LTAC, 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
10.0°C
usual 7.0°C–13.0°C
typical 15:00
16.0°C
usual 11.0°C–17.0°C
noon → peak climb
+2.0°C
how hot it gets last 14 days
19°C
14d high, 2026 10 28
avg high16.0°C
usual range11.0°C – 17.0°C
days ≥17°C6 / 14
days ≥18°C2 / 14
days ≥19°C1 / 14
when it peaks where the daily maximum usually lands
13:00–15:00
where the high landed on 84% of days
On dates near this one, this station's daily maximum fell between 13:00 and 15:00 local on 84% of 138 days, most often around 14:00.
The five-year mean curve is highest at 15:00 — 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+0.9°C mean, 5y, n=134
12:00 → 14:00+1.3°C mean, 5y, n=134
12:00 → 15:00+1.4°C mean, 5y, n=134
12:00 → 16:00+0.9°C mean, 5y, n=134
12:00 → 17:00-0.7°C mean, 5y, n=134
12:00 → 18:00-2.4°C mean, 5y, n=134
12:00 → 19:00-3.4°C mean, 5y, n=132
12:00 → 20:00-4.6°C mean, 5y, n=132
today @ 12:00awaiting (now 10:20)
implied peak~15°C (clim)
vs ecmwf 5°C
station intelligence 5 years of IEM observations
LTAC
heating passport climb to peak
134 observations per hour, 5 years, ±7 days
1° now at 10:00typically +5.9° more (p90 +9.0°)expected peak 7°peak already set on 3% of days by now
hrtemp
mean
already peaked
006°+9.8°0%
015°+10.4°0%
025°+11.0°0%
034°+11.3°0%
044°+11.9°0%
053°+12.2°0%
063°+12.4°0%
073°+12.6°0%
084°+11.4°0%
097°+8.8°1%
1010°+5.9°3%
1112°+3.6°6%
1214°+1.9°13%
1315°+0.9°45%
1415°+0.4°79%
1515°+0.2°97%
1615°+0.3°100%
1713°+0.5°100%
1811°+0.4°100%
1910°+0.4°100%
209°+0.5°100%
218°+0.5°100%
227°+0.4°100%
236°+0.2°100%
cloud regime Sep–Nov, against this date's normal
nowbroken1.3° below normal across 121 days (-2.1 to -0.5).
coldernormalwarmer
few+0.1°36d
scattered+0.1°132d
broken-1.3°121d
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
nowcalm or variableno steady direction through the day, so no sector describes it
coldernormalwarmer
SW+2.2°90d
S+0.7°15d
VARIABLE+0.0°16d
W-0.3°50d
NE-2.0°54d
E-2.1°24d
N-3.0°13d
NW-4.1°15d
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 | 10°C | -3°C | 12°C | 6°C | 10°C |
| 01:00 | 9°C | -3°C | 12°C | 6°C | 10°C |
| 02:00 | 9°C | -4°C | 12°C | 6°C | 10°C |
| 03:00 | 9°C | -4°C | 12°C | 6°C | 9°C |
| 04:00 | 8°C | -4°C | 11°C | 6°C | 9°C |
| 05:00 | 8°C | -4°C | 11°C | 5°C | 9°C |
| 06:00 | 8°C | -6°C | 11°C | 4°C | 10°C |
| 07:00 | 9°C | -5°C | 11°C | 4°C | 10°C |
| 08:00 | 8°C | -6°C | 11°C | 4°C | 10°C |
| 09:00 | 9°C | -4°C | 12°C | 6°C | 10°C |
| 10:00 | 10°C | -1°C | 13°C | 7°C | 13°C |
| 11:00 | 12°C | 1°C | 16°C | 7°C | 14°C |
| 12:00 | 13°C | 3°C | 16°C | 8°C | 15°C |
| 13:00 | 14°C | 4°C | 19°C | 10°C | 16°C |
| 14:00 | 15°C | 5°C | 18°C | 9°C | 16°C |
| 15:00 | 14°C | 5°C | 17°C | 9°C | 15°C |
| 16:00 | 14°C | 5°C | 17°C | 9°C | 16°C |
| 17:00 | 14°C | 5°C | 17°C | 9°C | 16°C |
| 18:00 | 13°C | 3°C | 15°C | 9°C | 15°C |
| 19:00 | 12°C | 1°C | 15°C | 8°C | 13°C |
| 20:00 | 11°C | 1°C | 13°C | 7°C | 12°C |
| 21:00 | 11°C | -1°C | 13°C | 8°C | 12°C |
| 22:00 | 10°C | -1°C | 12°C | 7°C | 12°C |
| 23:00 | 10°C | -1°C | 12°C | 7°C | 11°C |
observed highs last 14 days
Iowa Environmental Mesonet
11-09
8°C
—
11-08
5°C
—
11-07
7°C
—
11-06
11°C
—
11-05
12°C
—
11-04
16°C
—
11-03
17°C
—
11-02
17°C
—
11-01
17°C
—
10-31
15°C
—
10-30
17°C
—
10-29
14°C
—
10-28
19°C
—
10-27
18°C
—
forecast record what our morning pick said
last 14 days
daymodelsaid
highmiss
08-11ECMWF5°5°+0.3°
07-11Environment Canada GEM8°7°+1.3°
06-11Environment Canada GEM10°11°-1.5°
05-11Environment Canada GEM12°12°+0.0°
04-11Environment Canada GEM15°16°-1.5°
03-11Environment Canada GEM18°17°+1.2°
02-11Environment Canada GEM19°17°+1.5°
01-11Environment Canada GEM17°17°+0.4°
31-10Environment Canada GEM16°15°+1.4°
30-10ECMWF15°17°-1.5°
29-10ECMWF17°14°+3.5°
28-10ECMWF19°19°-0.0°
27-10ECMWF17°18°-0.6°
26-10ECMWF21°20°+0.7°
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 1.2°, within a degree on
47% of days.
what each model says daily maximum
ordered by accuracy at this station
models disagree by4.8°across 7 models today
modeltoday
tomorrow
its typical miss
ECMWF IFS2.9°10.0°0.93°most accurate here
Environment Canada GEM5.2°8.9°0.93°
NOAA GFS7.5°10.5°1.14°
DWD ICON2.7°9.1°1.22°
JMA GSM5.4°11.4°1.24°
CMA GRAPES7.2°9.9°1.84°
UK Met Office3.1°9.0°1.98°
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°
ECMWF IFS0.93°-0.48°66%
Environment Canada GEM0.93°-0.43°68%
NOAA GFS1.14°-0.58°50%
DWD ICON1.22°-1.05°47%
JMA GSM1.24°-0.69°45%
CMA GRAPES1.84°-1.55°26%
UK Met Office1.98°-1.80°13%
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→11/06Z
base10/06Z→11/06Zvariable 2kt; 10km+; scattered at 4,000ft; broken at 10,000ft
temporarily10/08Z→10/12Zlight showers snow; broken at 3,000ft; broken at 8,000ft
TAF LTAC 100440Z 1006/1106 VRB02KT 9999 SCT040 BKN100 TEMPO 1008/1012 -SHSN BKN030 BKN080
market vs climatology today
67 past days near this date
max
marketclimate
days
≤0°C0%0%0/67
1°C0%0%0/67
2°C11%0%0/67
3°C30%0%0/67
4°C37%0%0/67
5°C14%1%1/67
6°C4%0%0/67
7°C2%1%1/67
8°C0%1%1/67
9°C0%0%0/67
≥10°C0%96%64/67
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 98% and climatology to 100%.