KBOS — Boston Logan
42.3606, -71.0106 · 6 m· standard offset UTC-5 h · truth product CLIBOS
These pages are always bilinear interpolation, the headline method. The nearest-node variant, and every other window/initialization/interpolation/variable combination, is published on each permanent link below — follow any number.
Daily maximum temperature — MAE °F
| Model | d0 | d1 | d2 | d3 | d4 | d5 | d6 | d7 | d8 | d9 | lead 1–9 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ECMWF AIFS Singleaifs_single | — | 3.23-2.57 · n=28 | 3.44-2.96 · n=27 | 4.04-2.98 · n=26 | 4.16-2.22 · n=25 | 4.29-2.21 · n=23 | 4.50-2.45 · n=23 | 4.46-3.08 · n=22 | 4.67-3.12 · n=21 | 5.24-4.02 · n=20 | |
| Aurora (GFS init)aurora_gfs | — | 4.39-4.39 · n=2 | 5.36-5.36 · n=1 | — | — | — | — | — | — | — | |
| Aurora (IFS init)aurora_ifs | — | 3.24-3.24 · n=2 | 5.19-5.19 · n=1 | — | — | — | — | — | — | — | |
| FourCastNet v2 (GFS init)fourcastnet_gfs | — | 4.27-2.70 · n=2 | 7.02-7.02 · n=1 | — | — | — | — | — | — | — | |
| FourCastNet v2 (IFS init)fourcastnet_ifs | — | 4.49-2.33 · n=2 | 6.85-6.85 · n=1 | — | — | — | — | — | — | — | |
| NCEP GFSgfs | — | 2.22-0.29 · n=28 | 2.90-0.81 · n=27 | 4.14-2.27 · n=26 | 3.99-0.94 · n=25 | 3.59-0.76 · n=24 | 3.94-1.20 · n=23 | 4.40-0.26 · n=22 | 6.86-0.99 · n=21 | 8.21+0.68 · n=20 | |
| GraphCast (GFS init)graphcast_gfs | — | 4.08-4.08 · n=2 | 6.29-6.29 · n=1 | — | — | — | — | — | — | — | |
| GraphCast (IFS init)graphcast_ifs | — | 2.88-2.21 · n=27 | 3.03-2.67 · n=26 | 3.39-2.38 · n=24 | 3.71-1.46 · n=24 | 4.55-2.10 · n=24 | 4.12-2.20 · n=23 | 4.40-2.97 · n=22 | 5.09-3.47 · n=21 | 4.74-3.19 · n=20 | |
| ECMWF IFS HRESifs_hres | — | 2.47-1.03 · n=23 | 2.80-1.24 · n=21 | 2.79-0.73 · n=21 | 3.67-0.41 · n=20 | 4.06-0.12 · n=19 | 3.36-0.94 · n=18 | 4.42-1.02 · n=16 | 3.75-1.68 · n=16 | 4.27-3.34 · n=14 | |
| Pangu-Weather (GFS init)pangu_gfs | — | 2.34-1.63 · n=2 | 2.71-2.71 · n=1 | — | — | — | — | — | — | — | |
| Pangu-Weather (IFS init)pangu_ifs | — | 2.17-0.95 · n=2 | 3.11-3.11 · n=1 | — | — | — | — | — | — | — | |
| Persistence (baseline)persistence | — | 5.27-0.43 · n=88 | 7.48-0.30 · n=88 | 8.00-0.63 · n=89 | 8.26-0.82 · n=89 | 8.38-0.74 · n=89 | 8.40-0.67 · n=89 | 9.09-0.69 · n=89 | 8.98-0.78 · n=89 | 9.16-1.00 · n=89 |
Up to 1 of the scored days in this table carry a QC flag on the observation (a CLI value that disagreed with the hourly observations, or a fallback source). They are kept in the scores and counted here rather than dropped — see methodology.
+ model too warm · − model too cold · bias interval includes zero · ★ lowest MAE · = not distinguishable from the leader · ▼ significantly worse · n < 30 greyed and unranked · CI is a 95 % moving-block bootstrap interval.
Daily minimum temperature — MAE °F
| Model | d0 | d1 | d2 | d3 | d4 | d5 | d6 | d7 | d8 | d9 | lead 1–9 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ECMWF AIFS Singleaifs_single | — | 1.23-0.08 · n=28 | 1.29+0.07 · n=27 | 1.47-0.10 · n=26 | 1.65-0.29 · n=25 | 1.87-0.40 · n=23 | 2.18-0.33 · n=23 | 2.09+0.06 · n=22 | 2.16-0.32 · n=21 | 2.83-0.57 · n=20 | |
| Aurora (GFS init)aurora_gfs | — | 3.31-3.31 · n=2 | 5.13-5.13 · n=1 | — | — | — | — | — | — | — | |
| Aurora (IFS init)aurora_ifs | — | 3.19-3.19 · n=2 | 5.79-5.79 · n=1 | — | — | — | — | — | — | — | |
| FourCastNet v2 (GFS init)fourcastnet_gfs | — | 2.18-0.74 · n=2 | 2.00-2.00 · n=1 | — | — | — | — | — | — | — | |
| FourCastNet v2 (IFS init)fourcastnet_ifs | — | 2.54-1.00 · n=2 | 1.64-1.64 · n=1 | — | — | — | — | — | — | — | |
| NCEP GFSgfs | — | 1.56-0.64 · n=28 | 1.66-0.76 · n=27 | 2.08-1.39 · n=26 | 2.62-1.85 · n=25 | 2.49-1.76 · n=24 | 2.82-1.48 · n=23 | 2.48-0.38 · n=22 | 2.66-0.21 · n=21 | 3.75-1.17 · n=20 | |
| GraphCast (GFS init)graphcast_gfs | — | 2.55-2.55 · n=2 | 4.71-4.71 · n=1 | — | — | — | — | — | — | — | |
| GraphCast (IFS init)graphcast_ifs | — | 1.49-0.40 · n=27 | 1.64-0.35 · n=26 | 1.31-0.10 · n=24 | 1.70-0.06 · n=24 | 1.73-0.02 · n=24 | 1.92-0.10 · n=23 | 1.97-0.36 · n=22 | 2.50-0.55 · n=21 | 3.08-1.14 · n=20 | |
| ECMWF IFS HRESifs_hres | — | 1.20+0.48 · n=23 | 1.61+0.81 · n=21 | 1.86+0.79 · n=21 | 1.80+1.23 · n=20 | 2.31+0.61 · n=19 | 2.09+0.86 · n=18 | 2.02+0.48 · n=16 | 1.74+0.98 · n=16 | 2.76+0.61 · n=14 | |
| Pangu-Weather (GFS init)pangu_gfs | — | 2.16-1.67 · n=2 | 3.81-3.81 · n=1 | — | — | — | — | — | — | — | |
| Pangu-Weather (IFS init)pangu_ifs | — | 1.68-1.12 · n=2 | 2.83-2.83 · n=1 | — | — | — | — | — | — | — | |
| Persistence (baseline)persistence | — | 2.90-0.22 · n=88 | 4.41-0.41 · n=88 | 5.01-0.63 · n=89 | 5.35-0.74 · n=89 | 5.12-0.81 · n=89 | 5.16-0.82 · n=89 | 5.62-0.92 · n=89 | 5.87-1.03 · n=89 | 6.02-1.21 · n=89 |
Up to 1 of the scored days in this table carry a QC flag on the observation (a CLI value that disagreed with the hourly observations, or a fallback source). They are kept in the scores and counted here rather than dropped — see methodology.
Month-by-month slices, model availability and the observed-truth table live on the canonical page: they do not depend on the window, initialization or interpolation selected here.
All scores as JSON scores_latest.csv daily_errors.csv.gz data & licences