Tracking Xweather forecasts vs actuals for 50 US state capitals
Mean absolute error (°F) using the earliest stored forecast for each hour vs the observed temperature. Lower is better. Ranked best → worst.
| Capital | Samples | MAE °F | Bias °F | Avg lead (h) |
|---|---|---|---|---|
| Juneau AK | 187 | 1.37 | 0.28 | 48.0 |
| Columbus OH | 187 | 1.73 | -0.08 | 48.0 |
| Saint Paul MN | 187 | 1.78 | 0.24 | 48.0 |
| Raleigh NC | 187 | 1.87 | -0.10 | 48.0 |
| Frankfort KY | 187 | 1.88 | 0.34 | 48.0 |
| Columbia SC | 187 | 1.90 | 1.02 | 48.0 |
| Trenton NJ | 187 | 1.96 | 0.03 | 48.0 |
| Honolulu HI | 187 | 2.03 | -1.14 | 48.0 |
| Des Moines IA | 187 | 2.04 | -1.17 | 48.0 |
| Baton Rouge LA | 187 | 2.05 | 0.57 | 48.0 |
| Sacramento CA | 187 | 2.09 | 0.50 | 48.0 |
| Providence RI | 187 | 2.09 | -0.14 | 48.0 |
| Boston MA | 187 | 2.14 | -0.32 | 48.0 |
| Albany NY | 187 | 2.16 | 0.39 | 48.0 |
| Annapolis MD | 187 | 2.26 | -0.10 | 48.0 |
| Topeka KS | 187 | 2.29 | 0.28 | 48.0 |
| Austin TX | 187 | 2.30 | 1.59 | 48.0 |
| Indianapolis IN | 187 | 2.32 | -1.21 | 48.0 |
| Jefferson City MO | 187 | 2.32 | 0.39 | 48.0 |
| Little Rock AR | 187 | 2.34 | -0.12 | 48.0 |
| Richmond VA | 187 | 2.34 | 0.04 | 48.0 |
| Hartford CT | 187 | 2.38 | -0.08 | 48.0 |
| Lincoln NE | 187 | 2.39 | -1.45 | 48.0 |
| Pierre SD | 187 | 2.40 | -0.94 | 48.0 |
| Jackson MS | 187 | 2.44 | -1.11 | 48.0 |
| Denver CO | 187 | 2.45 | 0.79 | 48.0 |
| Montgomery AL | 187 | 2.48 | -0.86 | 48.0 |
| Lansing MI | 187 | 2.48 | 0.56 | 48.0 |
| Madison WI | 187 | 2.49 | 0.49 | 48.0 |
| Boise ID | 187 | 2.51 | 1.24 | 48.0 |
| Salem OR | 187 | 2.55 | -1.33 | 48.0 |
| Charleston WV | 187 | 2.57 | 1.12 | 48.0 |
| Cheyenne WY | 187 | 2.66 | -0.77 | 48.0 |
| Tallahassee FL | 187 | 2.70 | 0.38 | 48.0 |
| Salt Lake City UT | 187 | 2.79 | -0.39 | 48.0 |
| Dover DE | 187 | 2.84 | -1.04 | 48.0 |
| Oklahoma City OK | 187 | 2.86 | 1.45 | 48.0 |
| Santa Fe NM | 187 | 2.94 | -2.07 | 48.0 |
| Harrisburg PA | 187 | 3.03 | -0.91 | 48.0 |
| Carson City NV | 187 | 3.07 | 1.41 | 48.0 |
| Concord NH | 187 | 3.15 | -1.60 | 48.0 |
| Olympia WA | 187 | 3.16 | 0.41 | 48.0 |
| Augusta ME | 187 | 3.29 | -1.05 | 48.0 |
| Bismarck ND | 187 | 3.29 | -0.76 | 48.0 |
| Springfield IL | 187 | 3.36 | 1.47 | 48.0 |
| Helena MT | 187 | 3.54 | 0.12 | 48.0 |
| Atlanta GA | 187 | 3.56 | 3.12 | 48.0 |
| Nashville TN | 187 | 3.74 | 1.19 | 48.0 |
| Montpelier VT | 187 | 3.74 | 1.22 | 48.0 |
| Phoenix AZ | 187 | 3.79 | -0.66 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-10-03 13:00 CDT | Montgomery AL | 84.0°F | 85.0°F | -1.0° | 48.0 |
| 2026-10-03 10:00 AKDT | Juneau AK | 46.0°F | 46.0°F | +0.0° | 48.0 |
| 2026-10-03 11:00 MST | Phoenix AZ | 86.0°F | 89.0°F | -3.0° | 48.0 |
| 2026-10-03 13:00 CDT | Little Rock AR | 71.0°F | 69.0°F | +2.0° | 48.0 |
| 2026-10-03 11:00 PDT | Sacramento CA | 82.0°F | 83.0°F | -1.0° | 48.0 |
| 2026-10-03 12:00 MDT | Denver CO | 80.0°F | 77.0°F | +3.0° | 48.0 |
| 2026-10-03 14:00 EDT | Hartford CT | 68.0°F | 70.0°F | -2.0° | 48.0 |
| 2026-10-03 14:00 EDT | Dover DE | 66.0°F | 63.0°F | +3.0° | 48.0 |
| 2026-10-03 14:00 EDT | Tallahassee FL | 84.0°F | 75.0°F | +9.0° | 48.0 |
| 2026-10-03 14:00 EDT | Atlanta GA | 83.0°F | 82.0°F | +1.0° | 48.0 |
| 2026-10-03 08:00 HST | Honolulu HI | 77.0°F | 80.0°F | -3.0° | 48.0 |
| 2026-10-03 12:00 MDT | Boise ID | 73.0°F | 74.0°F | -1.0° | 48.0 |
| 2026-10-03 13:00 CDT | Springfield IL | 68.0°F | 69.0°F | -1.0° | 48.0 |
| 2026-10-03 14:00 EDT | Indianapolis IN | 65.0°F | 67.0°F | -2.0° | 48.0 |
| 2026-10-03 13:00 CDT | Des Moines IA | 64.0°F | 69.0°F | -5.0° | 48.0 |
| 2026-10-03 13:00 CDT | Topeka KS | 65.0°F | 73.0°F | -8.0° | 48.0 |
| 2026-10-03 14:00 EDT | Frankfort KY | 70.0°F | 71.0°F | -1.0° | 48.0 |
| 2026-10-03 13:00 CDT | Baton Rouge LA | 86.0°F | 89.0°F | -3.0° | 48.0 |
| 2026-10-03 14:00 EDT | Augusta ME | 65.0°F | 64.0°F | +1.0° | 48.0 |
| 2026-10-03 14:00 EDT | Annapolis MD | 65.0°F | 63.0°F | +2.0° | 48.0 |
| 2026-10-03 14:00 EDT | Boston MA | 65.0°F | 64.0°F | +1.0° | 48.0 |
| 2026-10-03 14:00 EDT | Lansing MI | 61.0°F | 62.0°F | -1.0° | 48.0 |
| 2026-10-03 13:00 CDT | Saint Paul MN | 64.0°F | 69.0°F | -5.0° | 48.0 |
| 2026-10-03 13:00 CDT | Jackson MS | 87.0°F | 90.0°F | -3.0° | 48.0 |
| 2026-10-03 13:00 CDT | Jefferson City MO | 68.0°F | 71.0°F | -3.0° | 48.0 |
| 2026-10-03 12:00 MDT | Helena MT | 63.0°F | 64.0°F | -1.0° | 48.0 |
| 2026-10-03 13:00 CDT | Lincoln NE | 64.0°F | 72.0°F | -8.0° | 48.0 |
| 2026-10-03 11:00 PDT | Carson City NV | 79.0°F | 73.0°F | +6.0° | 48.0 |
| 2026-10-03 14:00 EDT | Concord NH | 66.0°F | 68.0°F | -2.0° | 48.0 |
| 2026-10-03 14:00 EDT | Trenton NJ | 69.0°F | 71.0°F | -2.0° | 48.0 |
| 2026-10-03 12:00 MDT | Santa Fe NM | 63.0°F | 62.0°F | +1.0° | 48.0 |
| 2026-10-03 14:00 EDT | Albany NY | 65.0°F | 64.0°F | +1.0° | 48.0 |
| 2026-10-03 14:00 EDT | Raleigh NC | 80.0°F | 70.0°F | +10.0° | 48.0 |
| 2026-10-03 13:00 CDT | Bismarck ND | 64.0°F | 68.0°F | -4.0° | 48.0 |
| 2026-10-03 14:00 EDT | Columbus OH | 66.0°F | 66.0°F | +0.0° | 48.0 |
| 2026-10-03 13:00 CDT | Oklahoma City OK | 69.0°F | 69.0°F | +0.0° | 48.0 |
| 2026-10-03 11:00 PDT | Salem OR | 63.0°F | 65.0°F | -2.0° | 48.0 |
| 2026-10-03 14:00 EDT | Harrisburg PA | 68.0°F | 71.0°F | -3.0° | 48.0 |
| 2026-10-03 14:00 EDT | Providence RI | 67.0°F | 71.0°F | -4.0° | 48.0 |
| 2026-10-03 14:00 EDT | Columbia SC | 84.0°F | 84.0°F | +0.0° | 48.0 |