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) |
|---|---|---|---|---|
| Jackson MS | 171 | 1.39 | 0.18 | 48.0 |
| Little Rock AR | 171 | 1.47 | 0.51 | 48.0 |
| Austin TX | 171 | 1.58 | 0.93 | 48.0 |
| Juneau AK | 171 | 1.60 | -0.84 | 48.0 |
| Boise ID | 171 | 1.87 | -0.64 | 48.0 |
| Honolulu HI | 171 | 1.89 | -1.82 | 48.0 |
| Richmond VA | 171 | 1.94 | -0.76 | 48.0 |
| Augusta ME | 171 | 1.97 | -0.70 | 48.0 |
| Des Moines IA | 171 | 2.01 | 0.74 | 48.0 |
| Jefferson City MO | 171 | 2.07 | -0.28 | 48.0 |
| Columbia SC | 171 | 2.11 | -0.75 | 48.0 |
| Boston MA | 171 | 2.13 | -1.65 | 48.0 |
| Trenton NJ | 171 | 2.16 | -1.41 | 48.0 |
| Montgomery AL | 171 | 2.18 | 0.91 | 48.0 |
| Tallahassee FL | 171 | 2.19 | -0.26 | 48.0 |
| Helena MT | 171 | 2.20 | 0.58 | 48.0 |
| Indianapolis IN | 171 | 2.25 | 0.33 | 48.0 |
| Albany NY | 171 | 2.37 | -0.61 | 48.0 |
| Saint Paul MN | 171 | 2.41 | 0.83 | 48.0 |
| Dover DE | 171 | 2.54 | -1.58 | 48.0 |
| Frankfort KY | 171 | 2.54 | 0.62 | 48.0 |
| Lansing MI | 171 | 2.55 | 1.67 | 48.0 |
| Pierre SD | 171 | 2.55 | 1.26 | 48.0 |
| Annapolis MD | 171 | 2.60 | -0.82 | 48.0 |
| Carson City NV | 171 | 2.63 | 1.65 | 48.0 |
| Madison WI | 171 | 2.63 | 1.62 | 48.0 |
| Concord NH | 171 | 2.69 | -1.25 | 48.0 |
| Harrisburg PA | 171 | 2.69 | -1.71 | 48.0 |
| Cheyenne WY | 171 | 2.70 | -0.97 | 48.0 |
| Bismarck ND | 171 | 2.75 | 0.74 | 48.0 |
| Providence RI | 171 | 2.75 | -2.45 | 48.0 |
| Baton Rouge LA | 171 | 2.78 | 2.11 | 48.0 |
| Oklahoma City OK | 171 | 2.81 | 1.46 | 48.0 |
| Hartford CT | 171 | 2.85 | -1.82 | 48.0 |
| Nashville TN | 171 | 2.86 | 2.05 | 48.0 |
| Atlanta GA | 171 | 2.87 | 2.07 | 48.0 |
| Springfield IL | 171 | 2.89 | 1.70 | 48.0 |
| Charleston WV | 171 | 2.89 | 1.70 | 48.0 |
| Denver CO | 171 | 2.91 | 0.11 | 48.0 |
| Columbus OH | 171 | 2.91 | 1.43 | 48.0 |
| Topeka KS | 171 | 2.92 | -1.92 | 48.0 |
| Raleigh NC | 171 | 3.05 | -1.91 | 48.0 |
| Montpelier VT | 171 | 3.10 | 1.37 | 48.0 |
| Lincoln NE | 171 | 3.11 | -0.29 | 48.0 |
| Sacramento CA | 171 | 3.20 | 3.12 | 48.0 |
| Santa Fe NM | 171 | 3.29 | 1.24 | 48.0 |
| Salt Lake City UT | 171 | 3.68 | -1.84 | 48.0 |
| Salem OR | 171 | 3.82 | 2.79 | 48.0 |
| Phoenix AZ | 171 | 3.94 | -1.25 | 48.0 |
| Olympia WA | 171 | 3.98 | 2.61 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-09-22 21:00 CDT | Montgomery AL | 80.0°F | 76.0°F | +4.0° | 48.0 |
| 2026-09-22 18:00 AKDT | Juneau AK | 50.0°F | 49.0°F | +1.0° | 48.0 |
| 2026-09-22 19:00 MST | Phoenix AZ | 92.0°F | 96.0°F | -4.0° | 48.0 |
| 2026-09-22 21:00 CDT | Little Rock AR | 79.0°F | 77.0°F | +2.0° | 48.0 |
| 2026-09-22 19:00 PDT | Sacramento CA | 78.0°F | 76.0°F | +2.0° | 48.0 |
| 2026-09-22 20:00 MDT | Denver CO | 71.0°F | 59.0°F | +12.0° | 48.0 |
| 2026-09-22 22:00 EDT | Hartford CT | 53.0°F | 54.0°F | -1.0° | 48.0 |
| 2026-09-22 22:00 EDT | Dover DE | 63.0°F | 62.0°F | +1.0° | 48.0 |
| 2026-09-22 22:00 EDT | Tallahassee FL | 80.0°F | 79.0°F | +1.0° | 48.0 |
| 2026-09-22 22:00 EDT | Atlanta GA | 76.0°F | 79.0°F | -3.0° | 48.0 |
| 2026-09-22 16:00 HST | Honolulu HI | 85.0°F | 87.0°F | -2.0° | 48.0 |
| 2026-09-22 20:00 MDT | Boise ID | 76.0°F | 77.0°F | -1.0° | 48.0 |
| 2026-09-22 21:00 CDT | Springfield IL | 62.0°F | 60.0°F | +2.0° | 48.0 |
| 2026-09-22 22:00 EDT | Indianapolis IN | 63.0°F | 60.0°F | +3.0° | 48.0 |
| 2026-09-22 21:00 CDT | Des Moines IA | 56.0°F | 59.0°F | -3.0° | 48.0 |
| 2026-09-22 21:00 CDT | Topeka KS | 63.0°F | 66.0°F | -3.0° | 48.0 |
| 2026-09-22 22:00 EDT | Frankfort KY | 67.0°F | 62.0°F | +5.0° | 48.0 |
| 2026-09-22 21:00 CDT | Baton Rouge LA | 84.0°F | 77.0°F | +7.0° | 48.0 |
| 2026-09-22 22:00 EDT | Augusta ME | 50.0°F | 49.0°F | +1.0° | 48.0 |
| 2026-09-22 22:00 EDT | Annapolis MD | 64.0°F | 61.0°F | +3.0° | 48.0 |
| 2026-09-22 22:00 EDT | Boston MA | 56.0°F | 58.0°F | -2.0° | 48.0 |
| 2026-09-22 22:00 EDT | Lansing MI | 55.0°F | 54.0°F | +1.0° | 48.0 |
| 2026-09-22 21:00 CDT | Saint Paul MN | 56.0°F | 57.0°F | -1.0° | 48.0 |
| 2026-09-22 21:00 CDT | Jackson MS | 82.0°F | 84.0°F | -2.0° | 48.0 |
| 2026-09-22 21:00 CDT | Jefferson City MO | 64.0°F | 67.0°F | -3.0° | 48.0 |
| 2026-09-22 20:00 MDT | Helena MT | 67.0°F | 68.0°F | -1.0° | 48.0 |
| 2026-09-22 21:00 CDT | Lincoln NE | 59.0°F | 61.0°F | -2.0° | 48.0 |
| 2026-09-22 19:00 PDT | Carson City NV | 74.0°F | 75.0°F | -1.0° | 48.0 |
| 2026-09-22 22:00 EDT | Concord NH | 49.0°F | 47.0°F | +2.0° | 48.0 |
| 2026-09-22 22:00 EDT | Trenton NJ | 58.0°F | 61.0°F | -3.0° | 48.0 |
| 2026-09-22 20:00 MDT | Santa Fe NM | 62.0°F | 58.0°F | +4.0° | 48.0 |
| 2026-09-22 22:00 EDT | Albany NY | 54.0°F | 52.0°F | +2.0° | 48.0 |
| 2026-09-22 22:00 EDT | Raleigh NC | 73.0°F | 67.0°F | +6.0° | 48.0 |
| 2026-09-22 21:00 CDT | Bismarck ND | 60.0°F | 57.0°F | +3.0° | 48.0 |
| 2026-09-22 22:00 EDT | Columbus OH | 65.0°F | 60.0°F | +5.0° | 48.0 |
| 2026-09-22 21:00 CDT | Oklahoma City OK | 77.0°F | 78.0°F | -1.0° | 48.0 |
| 2026-09-22 19:00 PDT | Salem OR | 66.0°F | 68.0°F | -2.0° | 48.0 |
| 2026-09-22 22:00 EDT | Harrisburg PA | 58.0°F | 57.0°F | +1.0° | 48.0 |
| 2026-09-22 22:00 EDT | Providence RI | 53.0°F | 54.0°F | -1.0° | 48.0 |
| 2026-09-22 22:00 EDT | Columbia SC | 76.0°F | 73.0°F | +3.0° | 48.0 |