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) |
|---|---|---|---|---|
| Frankfort KY | 180 | 1.68 | 0.56 | 48.0 |
| Richmond VA | 180 | 1.72 | 0.06 | 48.0 |
| Charleston WV | 180 | 1.79 | 0.56 | 48.0 |
| Austin TX | 180 | 1.82 | 1.54 | 48.0 |
| Trenton NJ | 180 | 1.87 | 0.87 | 48.0 |
| Columbus OH | 180 | 1.91 | -1.52 | 48.0 |
| Juneau AK | 180 | 1.93 | 1.03 | 48.0 |
| Annapolis MD | 180 | 1.93 | 1.17 | 48.0 |
| Lansing MI | 180 | 1.94 | 0.67 | 48.0 |
| Saint Paul MN | 180 | 1.95 | -0.17 | 48.0 |
| Honolulu HI | 180 | 2.08 | -1.56 | 48.0 |
| Raleigh NC | 180 | 2.10 | 0.68 | 48.0 |
| Sacramento CA | 180 | 2.12 | 0.72 | 48.0 |
| Jefferson City MO | 180 | 2.12 | 1.37 | 48.0 |
| Indianapolis IN | 180 | 2.14 | -1.86 | 48.0 |
| Nashville TN | 180 | 2.14 | 0.58 | 48.0 |
| Harrisburg PA | 180 | 2.22 | 0.97 | 48.0 |
| Madison WI | 180 | 2.25 | 1.32 | 48.0 |
| Providence RI | 180 | 2.28 | 0.18 | 48.0 |
| Augusta ME | 180 | 2.33 | -1.84 | 48.0 |
| Boise ID | 180 | 2.37 | -1.43 | 48.0 |
| Lincoln NE | 180 | 2.43 | 1.02 | 48.0 |
| Atlanta GA | 180 | 2.44 | 1.83 | 48.0 |
| Pierre SD | 180 | 2.45 | 0.11 | 48.0 |
| Boston MA | 180 | 2.48 | 0.09 | 48.0 |
| Des Moines IA | 180 | 2.52 | -1.16 | 48.0 |
| Salem OR | 180 | 2.54 | -0.28 | 48.0 |
| Albany NY | 180 | 2.55 | -0.68 | 48.0 |
| Topeka KS | 180 | 2.57 | 1.66 | 48.0 |
| Montpelier VT | 180 | 2.58 | 1.23 | 48.0 |
| Springfield IL | 180 | 2.59 | 1.66 | 48.0 |
| Dover DE | 180 | 2.61 | -0.92 | 48.0 |
| Columbia SC | 180 | 2.66 | -0.04 | 48.0 |
| Tallahassee FL | 180 | 2.68 | 1.22 | 48.0 |
| Helena MT | 180 | 2.68 | -0.73 | 48.0 |
| Carson City NV | 180 | 2.68 | -1.70 | 48.0 |
| Concord NH | 180 | 2.71 | -0.67 | 48.0 |
| Jackson MS | 180 | 2.76 | 1.58 | 48.0 |
| Hartford CT | 180 | 2.84 | -0.49 | 48.0 |
| Bismarck ND | 180 | 2.89 | -1.14 | 48.0 |
| Montgomery AL | 180 | 2.97 | -0.68 | 48.0 |
| Oklahoma City OK | 180 | 3.00 | 0.91 | 48.0 |
| Cheyenne WY | 180 | 3.07 | 0.11 | 48.0 |
| Santa Fe NM | 180 | 3.09 | 0.61 | 48.0 |
| Salt Lake City UT | 180 | 3.17 | -0.61 | 48.0 |
| Denver CO | 180 | 3.18 | 0.74 | 48.0 |
| Phoenix AZ | 180 | 3.23 | -0.72 | 48.0 |
| Baton Rouge LA | 180 | 3.23 | 3.07 | 48.0 |
| Little Rock AR | 180 | 3.52 | -0.33 | 48.0 |
| Olympia WA | 180 | 3.94 | -2.02 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-08-26 06:00 CDT | Montgomery AL | 72.0°F | 72.0°F | +0.0° | 48.0 |
| 2026-08-26 03:00 AKDT | Juneau AK | 54.0°F | 48.0°F | +6.0° | 48.0 |
| 2026-08-26 04:00 MST | Phoenix AZ | 91.0°F | 94.0°F | -3.0° | 48.0 |
| 2026-08-26 06:00 CDT | Little Rock AR | 76.0°F | 80.0°F | -4.0° | 48.0 |
| 2026-08-26 04:00 PDT | Sacramento CA | 64.0°F | 64.0°F | +0.0° | 48.0 |
| 2026-08-26 05:00 MDT | Denver CO | 62.0°F | 62.0°F | +0.0° | 48.0 |
| 2026-08-26 07:00 EDT | Hartford CT | 61.0°F | 61.0°F | +0.0° | 48.0 |
| 2026-08-26 07:00 EDT | Dover DE | 65.0°F | 65.0°F | +0.0° | 48.0 |
| 2026-08-26 07:00 EDT | Tallahassee FL | 74.0°F | 75.0°F | -1.0° | 48.0 |
| 2026-08-26 07:00 EDT | Atlanta GA | 72.0°F | 68.0°F | +4.0° | 48.0 |
| 2026-08-26 01:00 HST | Honolulu HI | 76.0°F | 79.0°F | -3.0° | 48.0 |
| 2026-08-26 05:00 MDT | Boise ID | 69.0°F | 74.0°F | -5.0° | 48.0 |
| 2026-08-26 06:00 CDT | Springfield IL | 66.0°F | 69.0°F | -3.0° | 48.0 |
| 2026-08-26 07:00 EDT | Indianapolis IN | 62.0°F | 64.0°F | -2.0° | 48.0 |
| 2026-08-26 06:00 CDT | Des Moines IA | 69.0°F | 69.0°F | +0.0° | 48.0 |
| 2026-08-26 06:00 CDT | Topeka KS | 69.0°F | 70.0°F | -1.0° | 48.0 |
| 2026-08-26 07:00 EDT | Frankfort KY | 59.0°F | 58.0°F | +1.0° | 48.0 |
| 2026-08-26 06:00 CDT | Baton Rouge LA | 78.0°F | 75.0°F | +3.0° | 48.0 |
| 2026-08-26 07:00 EDT | Augusta ME | 61.0°F | 62.0°F | -1.0° | 48.0 |
| 2026-08-26 07:00 EDT | Annapolis MD | 67.0°F | 66.0°F | +1.0° | 48.0 |
| 2026-08-26 07:00 EDT | Boston MA | 65.0°F | 66.0°F | -1.0° | 48.0 |
| 2026-08-26 07:00 EDT | Lansing MI | 60.0°F | 59.0°F | +1.0° | 48.0 |
| 2026-08-26 06:00 CDT | Saint Paul MN | 67.0°F | 66.0°F | +1.0° | 48.0 |
| 2026-08-26 06:00 CDT | Jackson MS | 74.0°F | 74.0°F | +0.0° | 48.0 |
| 2026-08-26 06:00 CDT | Jefferson City MO | 69.0°F | 71.0°F | -2.0° | 48.0 |
| 2026-08-26 05:00 MDT | Helena MT | 58.0°F | 62.0°F | -4.0° | 48.0 |
| 2026-08-26 06:00 CDT | Lincoln NE | 67.0°F | 66.0°F | +1.0° | 48.0 |
| 2026-08-26 04:00 PDT | Carson City NV | 60.0°F | 59.0°F | +1.0° | 48.0 |
| 2026-08-26 07:00 EDT | Concord NH | 59.0°F | 54.0°F | +5.0° | 48.0 |
| 2026-08-26 07:00 EDT | Trenton NJ | 63.0°F | 62.0°F | +1.0° | 48.0 |
| 2026-08-26 05:00 MDT | Santa Fe NM | 62.0°F | 68.0°F | -6.0° | 48.0 |
| 2026-08-26 07:00 EDT | Albany NY | 59.0°F | 60.0°F | -1.0° | 48.0 |
| 2026-08-26 07:00 EDT | Raleigh NC | 68.0°F | 67.0°F | +1.0° | 48.0 |
| 2026-08-26 06:00 CDT | Bismarck ND | 58.0°F | 58.0°F | +0.0° | 48.0 |
| 2026-08-26 07:00 EDT | Columbus OH | 59.0°F | 59.0°F | +0.0° | 48.0 |
| 2026-08-26 06:00 CDT | Oklahoma City OK | 76.0°F | 79.0°F | -3.0° | 48.0 |
| 2026-08-26 04:00 PDT | Salem OR | 58.0°F | 54.0°F | +4.0° | 48.0 |
| 2026-08-26 07:00 EDT | Harrisburg PA | 61.0°F | 59.0°F | +2.0° | 48.0 |
| 2026-08-26 07:00 EDT | Providence RI | 63.0°F | 63.0°F | +0.0° | 48.0 |
| 2026-08-26 07:00 EDT | Columbia SC | 72.0°F | 73.0°F | -1.0° | 48.0 |