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) |
|---|---|---|---|---|
| Richmond VA | 175 | 1.33 | -0.39 | 48.0 |
| Honolulu HI | 175 | 1.53 | -1.21 | 48.0 |
| Baton Rouge LA | 175 | 1.57 | 0.89 | 48.0 |
| Salem OR | 175 | 1.74 | 0.82 | 48.0 |
| Jackson MS | 175 | 1.78 | 0.37 | 48.0 |
| Providence RI | 175 | 1.87 | -0.48 | 48.0 |
| Raleigh NC | 175 | 1.93 | 0.70 | 48.0 |
| Nashville TN | 175 | 2.12 | 0.14 | 48.0 |
| Trenton NJ | 175 | 2.15 | -0.59 | 48.0 |
| Little Rock AR | 175 | 2.17 | -0.89 | 48.0 |
| Saint Paul MN | 175 | 2.19 | 0.65 | 48.0 |
| Carson City NV | 175 | 2.19 | 1.34 | 48.0 |
| Annapolis MD | 175 | 2.20 | 0.71 | 48.0 |
| Sacramento CA | 175 | 2.23 | 2.03 | 48.0 |
| Boston MA | 175 | 2.23 | 0.77 | 48.0 |
| Charleston WV | 175 | 2.23 | 1.27 | 48.0 |
| Helena MT | 175 | 2.26 | 0.07 | 48.0 |
| Harrisburg PA | 175 | 2.26 | -0.65 | 48.0 |
| Atlanta GA | 175 | 2.30 | 1.01 | 48.0 |
| Augusta ME | 175 | 2.32 | -1.58 | 48.0 |
| Lansing MI | 175 | 2.35 | 0.76 | 48.0 |
| Hartford CT | 175 | 2.42 | -1.21 | 48.0 |
| Jefferson City MO | 175 | 2.43 | 0.90 | 48.0 |
| Lincoln NE | 175 | 2.45 | 0.81 | 48.0 |
| Austin TX | 175 | 2.46 | 2.45 | 48.0 |
| Dover DE | 175 | 2.55 | -0.37 | 48.0 |
| Des Moines IA | 175 | 2.57 | -0.06 | 48.0 |
| Indianapolis IN | 175 | 2.61 | 1.31 | 48.0 |
| Columbus OH | 175 | 2.70 | 0.79 | 48.0 |
| Phoenix AZ | 175 | 2.71 | -0.33 | 48.0 |
| Albany NY | 175 | 2.71 | -0.05 | 48.0 |
| Juneau AK | 175 | 2.79 | 0.91 | 48.0 |
| Montpelier VT | 175 | 2.81 | 1.63 | 48.0 |
| Springfield IL | 175 | 2.83 | 2.10 | 48.0 |
| Olympia WA | 175 | 2.83 | -1.63 | 48.0 |
| Topeka KS | 175 | 2.87 | 0.81 | 48.0 |
| Madison WI | 175 | 2.88 | 1.23 | 48.0 |
| Oklahoma City OK | 175 | 2.91 | 1.72 | 48.0 |
| Pierre SD | 175 | 2.99 | 1.97 | 48.0 |
| Tallahassee FL | 175 | 3.02 | 0.54 | 48.0 |
| Columbia SC | 175 | 3.02 | -0.19 | 48.0 |
| Montgomery AL | 175 | 3.05 | -0.47 | 48.0 |
| Denver CO | 175 | 3.05 | 1.71 | 48.0 |
| Bismarck ND | 175 | 3.16 | 1.02 | 48.0 |
| Cheyenne WY | 175 | 3.23 | 0.71 | 48.0 |
| Concord NH | 175 | 3.24 | -1.38 | 48.0 |
| Santa Fe NM | 175 | 3.30 | -1.72 | 48.0 |
| Boise ID | 175 | 3.31 | 0.11 | 48.0 |
| Salt Lake City UT | 175 | 3.46 | 0.56 | 48.0 |
| Frankfort KY | 175 | 3.50 | 2.84 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-08-02 01:00 CDT | Montgomery AL | 76.0°F | 82.0°F | -6.0° | 48.0 |
| 2026-08-01 22:00 AKDT | Juneau AK | 61.0°F | 61.0°F | +0.0° | 48.0 |
| 2026-08-01 23:00 MST | Phoenix AZ | 103.0°F | 105.0°F | -2.0° | 48.0 |
| 2026-08-02 01:00 CDT | Little Rock AR | 76.0°F | 77.0°F | -1.0° | 48.0 |
| 2026-08-01 23:00 PDT | Sacramento CA | 78.0°F | 75.0°F | +3.0° | 48.0 |
| 2026-08-02 00:00 MDT | Denver CO | 77.0°F | 80.0°F | -3.0° | 48.0 |
| 2026-08-02 02:00 EDT | Hartford CT | 69.0°F | 73.0°F | -4.0° | 48.0 |
| 2026-08-02 02:00 EDT | Dover DE | 72.0°F | 76.0°F | -4.0° | 48.0 |
| 2026-08-02 02:00 EDT | Tallahassee FL | 76.0°F | 77.0°F | -1.0° | 48.0 |
| 2026-08-02 02:00 EDT | Atlanta GA | 74.0°F | 77.0°F | -3.0° | 48.0 |
| 2026-08-01 20:00 HST | Honolulu HI | 77.0°F | 80.0°F | -3.0° | 48.0 |
| 2026-08-02 00:00 MDT | Boise ID | 80.0°F | 79.0°F | +1.0° | 48.0 |
| 2026-08-02 01:00 CDT | Springfield IL | 69.0°F | 67.0°F | +2.0° | 48.0 |
| 2026-08-02 02:00 EDT | Indianapolis IN | 71.0°F | 68.0°F | +3.0° | 48.0 |
| 2026-08-02 01:00 CDT | Des Moines IA | 68.0°F | 69.0°F | -1.0° | 48.0 |
| 2026-08-02 01:00 CDT | Topeka KS | 69.0°F | 69.0°F | +0.0° | 48.0 |
| 2026-08-02 02:00 EDT | Frankfort KY | 68.0°F | 70.0°F | -2.0° | 48.0 |
| 2026-08-02 01:00 CDT | Baton Rouge LA | 83.0°F | 83.0°F | +0.0° | 48.0 |
| 2026-08-02 02:00 EDT | Augusta ME | 63.0°F | 67.0°F | -4.0° | 48.0 |
| 2026-08-02 02:00 EDT | Annapolis MD | 76.0°F | 79.0°F | -3.0° | 48.0 |
| 2026-08-02 02:00 EDT | Boston MA | 71.0°F | 73.0°F | -2.0° | 48.0 |
| 2026-08-02 02:00 EDT | Lansing MI | 66.0°F | 68.0°F | -2.0° | 48.0 |
| 2026-08-02 01:00 CDT | Saint Paul MN | 68.0°F | 72.0°F | -4.0° | 48.0 |
| 2026-08-02 01:00 CDT | Jackson MS | 79.0°F | 76.0°F | +3.0° | 48.0 |
| 2026-08-02 01:00 CDT | Jefferson City MO | 70.0°F | 68.0°F | +2.0° | 48.0 |
| 2026-08-02 00:00 MDT | Helena MT | 78.0°F | 79.0°F | -1.0° | 48.0 |
| 2026-08-02 01:00 CDT | Lincoln NE | 69.0°F | 65.0°F | +4.0° | 48.0 |
| 2026-08-01 23:00 PDT | Carson City NV | 75.0°F | 79.0°F | -4.0° | 48.0 |
| 2026-08-02 02:00 EDT | Concord NH | 65.0°F | 72.0°F | -7.0° | 48.0 |
| 2026-08-02 02:00 EDT | Trenton NJ | 70.0°F | 75.0°F | -5.0° | 48.0 |
| 2026-08-02 00:00 MDT | Santa Fe NM | 67.0°F | 66.0°F | +1.0° | 48.0 |
| 2026-08-02 02:00 EDT | Albany NY | 69.0°F | 75.0°F | -6.0° | 48.0 |
| 2026-08-02 02:00 EDT | Raleigh NC | 74.0°F | 78.0°F | -4.0° | 48.0 |
| 2026-08-02 01:00 CDT | Bismarck ND | 73.0°F | 74.0°F | -1.0° | 48.0 |
| 2026-08-02 02:00 EDT | Columbus OH | 70.0°F | 72.0°F | -2.0° | 48.0 |
| 2026-08-02 01:00 CDT | Oklahoma City OK | 76.0°F | 78.0°F | -2.0° | 48.0 |
| 2026-08-01 23:00 PDT | Salem OR | 60.0°F | 61.0°F | -1.0° | 48.0 |
| 2026-08-02 02:00 EDT | Harrisburg PA | 75.0°F | 78.0°F | -3.0° | 48.0 |
| 2026-08-02 02:00 EDT | Providence RI | 69.0°F | 72.0°F | -3.0° | 48.0 |
| 2026-08-02 02:00 EDT | Columbia SC | 77.0°F | 74.0°F | +3.0° | 48.0 |