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Dave's Sweater
Tracked daily | 142 days on the record

Right Ray / Wrong Ray

Every forecast is a claim about tomorrow. This scoreboard grades every one we track — free and paid alike — against what the sky actually did. Same rubric for everybody.

How Ray did ↓How we score it

Our forecast

Dave's Sweater Index

#1 of 11

Our own forecast, built from the free forecasters below and graded by the exact same rubric as every one of them. It is not a plain average. The rules that combine them are published, and they are why it outscores its own members. No résumé, no paywall.

95.3
Season avg / 100
33R
Graded Right
33
Days scored
Latest scored day:99.4/100from 8 forecasters

Season Scoreboard

Every forecaster we track, ranked by season average — our own Dave's Sweater Index (marked ours) graded right in the mix. The order is merit-based.

  • Dave's Sweater Indexours95.3
    33R - 0M - 0W | 33 days
  • Google94.7
    33R - 0M - 0W | 33 days
  • MET Norway93.7
    31R - 2M - 0W | 33 days
  • Visual Crossing90.0
    31R - 2M - 0W | 33 days
  • Open-Meteo89.9
    492R - 14M - 2W | 508 days
  • Tomorrow.io88.6
    32R - 1M - 0W | 33 days
  • Apple Weather86.9
    129R - 10M - 3W | 142 days
  • WeatherAPI85.3
    29R - 4M - 0W | 33 days
  • OpenWeather83.5
    25R - 7M - 1W | 33 days
  • National Weather Service82.1
    25R - 8M - 0W | 33 days
  • Ray's Weather69.0
    53R - 58M - 31W | 142 days
R
Right, 75+
M
Meh, 60 to 74
W
Wrong, under 60
Trend
7-day rolling average

How far out can you trust a forecast?

The same 100-point grading, applied to the forecast each source published up to five days ahead. The free forecasts win at every horizon, and the gap widens at days 3 and 4: Ray's extended days publish fewer scoreable fields, and under the published rules a blank earns nothing. Our own Dave's Sweater Index (the bold white line) stays near the top clear out to day five, because a consensus barely fades when no single source has to carry it.

Tap a line or a name to isolate it.

10075 Right60 Meh50ScoreSame day12345Forecasted days out

Lines stop where the data does: not every source publishes five days out, samples thin past day 3, and a lead is only charted once it holds at least 10 scored days. Ray's single day-5 row sits out until it accumulates.

Average accuracy score by forecast lead time
SourceSame day1 days out2 days out3 days out4 days out5 days out
Dave's Sweater Index95.3294.8392.7494.5193.4991.5
Google94.6794.4693.88
MET Norway93.6995.3392.0988.4788.2285.88
Visual Crossing89.9891.2291.890.6490.9690.31
Open-Meteo89.88858684.3282.9780.93
Tomorrow.io88.6287.692.5491.8888.1285.58
WeatherAPI85.2682.3680.6
OpenWeather83.4883.4383.5283.5681.6879.47
National Weather Service82.1381.779.8779.778.6876.8
Ray's Weather69.0169.5868.9856.356.44

How lead-time scoring works

Latest scored day | July 26, 2026

Yesterday's forecasts, graded against what the sky actually did. The math is under each score.

What actually happened
Hi: 76.5° / Lo: 63.4° | Wind: 7.9 mph | Rain: 0.146"
Moderate drizzle
Apple Weatherday's bestFree100.0/100
Predicted hi / lo
76.5° / 63.6°
Wind
9.7 mph
Rain
0.063"
Show the math ↓
Field
Predicted → actual
Pts
High temp · ±0°
76.5° 76.5°
30/30
Low temp · ±0.2°
63.6° 63.4°
30/30
Wind · ±1.8 mph
9.7 mph 7.9 mph
20/20
Precip · ±0.08"
0.06" 0.15"
20/20
Open-MeteoFree100.0/100
Predicted hi / lo
76.5° / 63.6°
Wind
9.7 mph
Rain
0.063"
Show the math ↓
Field
Predicted → actual
Pts
High temp · ±0°
76.5° 76.5°
30/30
Low temp · ±0.2°
63.6° 63.4°
30/30
Wind · ±1.8 mph
9.7 mph 7.9 mph
20/20
Precip · ±0.08"
0.06" 0.15"
20/20
GoogleFree99.0/100
Predicted hi / lo
75.3° / 64.1°
Wind
7 mph
Rain
Show the math ↓
Field
Predicted → actual
Pts
High temp · ±1.2°
75.3° 76.5°
29.4/30
Low temp · ±0.7°
64.1° 63.4°
30/30
Wind · ±0.9 mph
7 mph 7.9 mph
20/20
Precip · ±0.12"
0.27" 0.15"
19.6/20
MET NorwayFree97.3/100
Predicted hi / lo
74.8° / 62.2°
Wind
9.2 mph
Rain
Show the math ↓
Field
Predicted → actual
Pts
High temp · ±1.7°
74.8° 76.5°
27.9/30
Low temp · ±1.2°
62.2° 63.4°
29.4/30
Wind · ±1.3 mph
9.2 mph 7.9 mph
20/20
Precip · ±0.07"
0.08" 0.15"
20/20
OpenWeatherFree96.7/100
Predicted hi / lo
76.5° / 65.5°
Wind
7.5 mph
Rain
Show the math ↓
Field
Predicted → actual
Pts
High temp · ±0°
76.5° 76.5°
30/30
Low temp · ±2.1°
65.5° 63.4°
26.7/30
Wind · ±0.4 mph
7.5 mph 7.9 mph
20/20
Precip · ±0.08"
0.07" 0.15"
20/20
Visual CrossingFree95.5/100
Predicted hi / lo
74° / 63.9°
Wind
5.8 mph
Rain
Show the math ↓
Field
Predicted → actual
Pts
High temp · ±2.5°
74° 76.5°
25.5/30
Low temp · ±0.5°
63.9° 63.4°
30/30
Wind · ±2.1 mph
5.8 mph 7.9 mph
20/20
Precip · ±0"
0.15" 0.15"
20/20
Ray's WeatherPaid87.3/100
Predicted hi / lo
78° / 62°
Wind
7.5 mph
Rain
Show the math ↓
Field
Predicted → actual
Pts
High temp · ±1.5°
78° 76.5°
28.5/30
Low temp · ±1.4°
62° 63.4°
28.8/30
Wind · ±0.4 mph
5-10 7.9 mph
20/20
Precip ·
0.15"
10/20
Tomorrow.ioFree84.6/100
Predicted hi / lo
76.4° / 60.6°
Wind
7.7 mph
Rain
Show the math ↓
Field
Predicted → actual
Pts
High temp · ±0.1°
76.4° 76.5°
30/30
Low temp · ±2.8°
60.6° 63.4°
24.6/30
Wind · ±0.2 mph
7.7 mph 7.9 mph
20/20
Precip · ±0.71"
0.86" 0.15"
10/20
National Weather ServiceFree80.0/100
Predicted hi / lo
76° / 61°
Wind
2 mph
Rain
Show the math ↓
Field
Predicted → actual
Pts
High temp · ±0.5°
76° 76.5°
30/30
Low temp · ±2.4°
61° 63.4°
25.8/30
Wind · ±5.9 mph
2 mph 7.9 mph
14.2/20
Precip ·
0.15"
10/20
WeatherAPIday's worstFree78.5/100
Predicted hi / lo
81.3° / 61.2°
Wind
3.8 mph
Rain
Show the math ↓
Field
Predicted → actual
Pts
High temp · ±4.8°
81.3° 76.5°
18.6/30
Low temp · ±2.2°
61.2° 63.4°
26.4/30
Wind · ±4.1 mph
3.8 mph 7.9 mph
17.8/20
Precip · ±0.31"
0.46" 0.15"
15.7/20

Every forecast is scored out of 100 on temperature, wind, and precipitation, against what actually happened. Full methodology

What they're predicting now

Here's what each forecast says for Monday, July 27: Logged before the actuals exist. Come back once the day's in to see who was right.

Dave's Sweater Index
Hi / Lo
80° / 64°
Wind
9 mph
Precip
Rain
Open-Meteo
Hi / Lo
80° / 65°
Wind
14 mph
Precip
No precip
Apple Weather
Hi / Lo
80° / 65°
Wind
14 mph
Precip
No precip
Ray's Weather
Hi / Lo
82° / 64°
Wind
5–15 mph
Precip
No precip
NWS
Hi / Lo
80° / 63°
Wind
8 mph
Precip
No precip
Met.no
Hi / Lo
77° / 63°
Wind
8 mph
Precip
No precip
OpenWeatherMap
Hi / Lo
82° / 65°
Wind
9 mph
Precip
No precip
WeatherAPI
Hi / Lo
82° / 63°
Wind
8 mph
Precip
No precip
Visual Crossing
Hi / Lo
79° / 66°
Wind
9 mph
Precip
Rain
Tomorrow.io
Hi / Lo
80° / 63°
Wind
10 mph
Precip
No precip
Google Weather
Hi / Lo
80° / 65°
Wind
8 mph
Precip
Rain