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 | 176 | 1.16 | 0.03 | 48.0 |
| Trenton NJ | 175 | 1.41 | -0.06 | 48.0 |
| Columbus OH | 175 | 1.70 | 0.09 | 48.0 |
| Baton Rouge LA | 176 | 1.77 | 0.09 | 48.0 |
| Columbia SC | 175 | 1.79 | 0.82 | 48.0 |
| Frankfort KY | 176 | 1.84 | 0.47 | 48.0 |
| Annapolis MD | 176 | 1.87 | -0.30 | 48.0 |
| Honolulu HI | 176 | 1.91 | -0.99 | 48.0 |
| Saint Paul MN | 176 | 1.95 | 0.09 | 48.0 |
| Boise ID | 176 | 2.07 | 0.63 | 48.0 |
| Sacramento CA | 176 | 2.09 | 0.44 | 48.0 |
| Albany NY | 175 | 2.14 | 0.62 | 48.0 |
| Boston MA | 176 | 2.15 | -0.33 | 48.0 |
| Dover DE | 176 | 2.22 | -1.31 | 48.0 |
| Providence RI | 175 | 2.23 | -0.27 | 48.0 |
| Denver CO | 176 | 2.24 | 0.42 | 48.0 |
| Indianapolis IN | 176 | 2.26 | -1.09 | 48.0 |
| Raleigh NC | 176 | 2.28 | 0.61 | 48.0 |
| Austin TX | 175 | 2.33 | 1.69 | 48.0 |
| Des Moines IA | 176 | 2.34 | -1.53 | 48.0 |
| Topeka KS | 176 | 2.41 | -0.20 | 48.0 |
| Pierre SD | 175 | 2.41 | -0.78 | 48.0 |
| Harrisburg PA | 175 | 2.43 | -1.05 | 48.0 |
| Little Rock AR | 176 | 2.44 | -0.12 | 48.0 |
| Lansing MI | 176 | 2.45 | 0.17 | 48.0 |
| Jefferson City MO | 176 | 2.45 | 0.46 | 48.0 |
| Richmond VA | 175 | 2.45 | 0.65 | 48.0 |
| Charleston WV | 175 | 2.46 | 1.06 | 48.0 |
| Hartford CT | 176 | 2.47 | -0.13 | 48.0 |
| Salem OR | 175 | 2.47 | -1.23 | 48.0 |
| Tallahassee FL | 176 | 2.55 | 0.42 | 48.0 |
| Madison WI | 175 | 2.61 | -0.09 | 48.0 |
| Lincoln NE | 175 | 2.63 | -1.83 | 48.0 |
| Cheyenne WY | 175 | 2.63 | -0.94 | 48.0 |
| Augusta ME | 176 | 2.64 | -0.24 | 48.0 |
| Jackson MS | 176 | 2.68 | -1.69 | 48.0 |
| Salt Lake City UT | 175 | 2.74 | -0.64 | 48.0 |
| Oklahoma City OK | 175 | 2.75 | 1.42 | 48.0 |
| Montgomery AL | 176 | 2.77 | -1.36 | 48.0 |
| Concord NH | 175 | 2.90 | -0.95 | 48.0 |
| Carson City NV | 175 | 3.09 | 1.35 | 48.0 |
| Santa Fe NM | 175 | 3.22 | -2.63 | 48.0 |
| Olympia WA | 175 | 3.23 | 0.40 | 48.0 |
| Helena MT | 176 | 3.60 | -0.40 | 48.0 |
| Bismarck ND | 175 | 3.62 | -0.77 | 48.0 |
| Atlanta GA | 176 | 3.64 | 3.13 | 48.0 |
| Montpelier VT | 175 | 3.68 | 1.74 | 48.0 |
| Springfield IL | 176 | 3.69 | 1.65 | 48.0 |
| Phoenix AZ | 176 | 4.04 | -1.39 | 48.0 |
| Nashville TN | 175 | 4.09 | 1.72 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-10-04 02:00 CDT | Montgomery AL | 73.0°F | 76.0°F | -3.0° | 48.0 |
| 2026-10-03 23:00 AKDT | Juneau AK | 46.0°F | 49.0°F | -3.0° | 48.0 |
| 2026-10-04 00:00 MST | Phoenix AZ | 80.0°F | 84.0°F | -4.0° | 48.0 |
| 2026-10-04 02:00 CDT | Little Rock AR | 65.0°F | 66.0°F | -1.0° | 48.0 |
| 2026-10-04 00:00 PDT | Sacramento CA | 72.0°F | 68.0°F | +4.0° | 48.0 |
| 2026-10-04 01:00 MDT | Denver CO | 60.0°F | 55.0°F | +5.0° | 48.0 |
| 2026-10-04 03:00 EDT | Hartford CT | 49.0°F | 53.0°F | -4.0° | 48.0 |
| 2026-10-04 03:00 EDT | Dover DE | 60.0°F | 66.0°F | -6.0° | 48.0 |
| 2026-10-04 03:00 EDT | Tallahassee FL | 76.0°F | 74.0°F | +2.0° | 48.0 |
| 2026-10-04 03:00 EDT | Atlanta GA | 71.0°F | 72.0°F | -1.0° | 48.0 |
| 2026-10-03 21:00 HST | Honolulu HI | 77.0°F | 79.0°F | -2.0° | 48.0 |
| 2026-10-04 01:00 MDT | Boise ID | 64.0°F | 64.0°F | +0.0° | 48.0 |
| 2026-10-04 02:00 CDT | Springfield IL | 51.0°F | 49.0°F | +2.0° | 48.0 |
| 2026-10-04 03:00 EDT | Indianapolis IN | 52.0°F | 53.0°F | -1.0° | 48.0 |
| 2026-10-04 02:00 CDT | Des Moines IA | 54.0°F | 56.0°F | -2.0° | 48.0 |
| 2026-10-04 02:00 CDT | Topeka KS | 56.0°F | 56.0°F | +0.0° | 48.0 |
| 2026-10-04 03:00 EDT | Frankfort KY | 56.0°F | 54.0°F | +2.0° | 48.0 |
| 2026-10-04 02:00 CDT | Baton Rouge LA | 76.0°F | 76.0°F | +0.0° | 48.0 |
| 2026-10-04 03:00 EDT | Augusta ME | 41.0°F | 42.0°F | -1.0° | 48.0 |
| 2026-10-04 03:00 EDT | Annapolis MD | 61.0°F | 62.0°F | -1.0° | 48.0 |
| 2026-10-04 03:00 EDT | Boston MA | 51.0°F | 52.0°F | -1.0° | 48.0 |
| 2026-10-04 03:00 EDT | Lansing MI | 45.0°F | 51.0°F | -6.0° | 48.0 |
| 2026-10-04 02:00 CDT | Saint Paul MN | 55.0°F | 57.0°F | -2.0° | 48.0 |
| 2026-10-04 02:00 CDT | Jackson MS | 73.0°F | 76.0°F | -3.0° | 48.0 |
| 2026-10-04 02:00 CDT | Jefferson City MO | 55.0°F | 52.0°F | +3.0° | 48.0 |
| 2026-10-04 01:00 MDT | Helena MT | 50.0°F | 54.0°F | -4.0° | 48.0 |
| 2026-10-04 02:00 CDT | Lincoln NE | 56.0°F | 53.0°F | +3.0° | 48.0 |
| 2026-10-04 03:00 EDT | Raleigh NC | 66.0°F | 58.0°F | +8.0° | 48.0 |
| 2026-10-04 02:00 CDT | Bismarck ND | 48.0°F | 40.0°F | +8.0° | 48.0 |
| 2026-10-04 01:00 CDT | Montgomery AL | 73.0°F | 77.0°F | -4.0° | 48.0 |
| 2026-10-03 22:00 AKDT | Juneau AK | 47.0°F | 48.0°F | -1.0° | 48.0 |
| 2026-10-03 23:00 MST | Phoenix AZ | 81.0°F | 86.0°F | -5.0° | 48.0 |
| 2026-10-04 01:00 CDT | Little Rock AR | 66.0°F | 66.0°F | +0.0° | 48.0 |
| 2026-10-03 23:00 PDT | Sacramento CA | 74.0°F | 70.0°F | +4.0° | 48.0 |
| 2026-10-04 00:00 MDT | Denver CO | 62.0°F | 54.0°F | +8.0° | 48.0 |
| 2026-10-04 02:00 EDT | Hartford CT | 50.0°F | 54.0°F | -4.0° | 48.0 |
| 2026-10-04 02:00 EDT | Dover DE | 60.0°F | 65.0°F | -5.0° | 48.0 |
| 2026-10-04 02:00 EDT | Tallahassee FL | 76.0°F | 75.0°F | +1.0° | 48.0 |
| 2026-10-04 02:00 EDT | Atlanta GA | 71.0°F | 73.0°F | -2.0° | 48.0 |
| 2026-10-03 20:00 HST | Honolulu HI | 77.0°F | 80.0°F | -3.0° | 48.0 |