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 | 179 | 1.56 | 0.42 | 48.0 |
| Austin TX | 179 | 1.66 | 1.26 | 48.0 |
| Honolulu HI | 179 | 1.85 | -0.94 | 48.0 |
| Raleigh NC | 179 | 1.86 | 0.79 | 48.0 |
| Richmond VA | 179 | 1.87 | 0.06 | 48.0 |
| Jackson MS | 179 | 1.88 | 0.83 | 48.0 |
| Saint Paul MN | 179 | 1.89 | -0.18 | 48.0 |
| Charleston WV | 179 | 1.92 | 0.24 | 48.0 |
| Frankfort KY | 179 | 1.94 | 0.71 | 48.0 |
| Boise ID | 179 | 1.98 | -0.80 | 48.0 |
| Annapolis MD | 179 | 1.98 | 1.09 | 48.0 |
| Lansing MI | 179 | 2.04 | 0.64 | 48.0 |
| Indianapolis IN | 179 | 2.12 | -1.07 | 48.0 |
| Columbus OH | 179 | 2.13 | -1.37 | 48.0 |
| Dover DE | 179 | 2.21 | -0.25 | 48.0 |
| Des Moines IA | 179 | 2.26 | -1.63 | 48.0 |
| Nashville TN | 179 | 2.30 | 1.11 | 48.0 |
| Sacramento CA | 179 | 2.31 | 0.16 | 48.0 |
| Albany NY | 179 | 2.32 | -0.02 | 48.0 |
| Providence RI | 179 | 2.33 | 0.91 | 48.0 |
| Baton Rouge LA | 179 | 2.34 | 2.13 | 48.0 |
| Harrisburg PA | 179 | 2.38 | 1.41 | 48.0 |
| Augusta ME | 179 | 2.40 | -1.65 | 48.0 |
| Trenton NJ | 179 | 2.41 | 1.45 | 48.0 |
| Springfield IL | 179 | 2.43 | 1.82 | 48.0 |
| Jefferson City MO | 179 | 2.45 | 2.13 | 48.0 |
| Boston MA | 179 | 2.53 | 1.28 | 48.0 |
| Salem OR | 179 | 2.55 | -0.30 | 48.0 |
| Madison WI | 179 | 2.55 | 1.68 | 48.0 |
| Columbia SC | 179 | 2.58 | 0.87 | 48.0 |
| Atlanta GA | 179 | 2.67 | 2.17 | 48.0 |
| Tallahassee FL | 179 | 2.70 | 1.28 | 48.0 |
| Pierre SD | 179 | 2.71 | -0.32 | 48.0 |
| Lincoln NE | 179 | 2.77 | 1.35 | 48.0 |
| Montgomery AL | 179 | 2.78 | -0.22 | 48.0 |
| Hartford CT | 179 | 2.78 | 0.57 | 48.0 |
| Montpelier VT | 179 | 2.84 | 0.71 | 48.0 |
| Topeka KS | 179 | 2.85 | 2.30 | 48.0 |
| Little Rock AR | 179 | 2.93 | -1.07 | 48.0 |
| Helena MT | 179 | 2.94 | -1.12 | 48.0 |
| Santa Fe NM | 179 | 3.02 | 0.55 | 48.0 |
| Carson City NV | 179 | 3.03 | -2.28 | 48.0 |
| Oklahoma City OK | 179 | 3.07 | 0.87 | 48.0 |
| Bismarck ND | 179 | 3.08 | -1.45 | 48.0 |
| Concord NH | 179 | 3.12 | -1.51 | 48.0 |
| Phoenix AZ | 179 | 3.36 | -1.17 | 48.0 |
| Denver CO | 179 | 3.51 | 0.20 | 48.0 |
| Cheyenne WY | 179 | 3.55 | 0.49 | 48.0 |
| Olympia WA | 179 | 3.83 | -1.78 | 48.0 |
| Salt Lake City UT | 179 | 3.94 | -1.63 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-08-24 05:00 CDT | Montgomery AL | 73.0°F | 76.0°F | -3.0° | 48.0 |
| 2026-08-24 02:00 AKDT | Juneau AK | 53.0°F | 52.0°F | +1.0° | 48.0 |
| 2026-08-24 03:00 MST | Phoenix AZ | 91.0°F | 89.0°F | +2.0° | 48.0 |
| 2026-08-24 05:00 CDT | Little Rock AR | 75.0°F | 76.0°F | -1.0° | 48.0 |
| 2026-08-24 03:00 PDT | Sacramento CA | 64.0°F | 68.0°F | -4.0° | 48.0 |
| 2026-08-24 04:00 MDT | Denver CO | 67.0°F | 66.0°F | +1.0° | 48.0 |
| 2026-08-24 06:00 EDT | Hartford CT | 62.0°F | 61.0°F | +1.0° | 48.0 |
| 2026-08-24 06:00 EDT | Dover DE | 64.0°F | 66.0°F | -2.0° | 48.0 |
| 2026-08-24 06:00 EDT | Tallahassee FL | 75.0°F | 75.0°F | +0.0° | 48.0 |
| 2026-08-24 06:00 EDT | Atlanta GA | 69.0°F | 67.0°F | +2.0° | 48.0 |
| 2026-08-24 00:00 HST | Honolulu HI | 79.0°F | 81.0°F | -2.0° | 48.0 |
| 2026-08-24 04:00 MDT | Boise ID | 65.0°F | 66.0°F | -1.0° | 48.0 |
| 2026-08-24 05:00 CDT | Springfield IL | 61.0°F | 55.0°F | +6.0° | 48.0 |
| 2026-08-24 06:00 EDT | Indianapolis IN | 58.0°F | 58.0°F | +0.0° | 48.0 |
| 2026-08-24 05:00 CDT | Des Moines IA | 64.0°F | 64.0°F | +0.0° | 48.0 |
| 2026-08-24 05:00 CDT | Topeka KS | 68.0°F | 65.0°F | +3.0° | 48.0 |
| 2026-08-24 06:00 EDT | Frankfort KY | 58.0°F | 59.0°F | -1.0° | 48.0 |
| 2026-08-24 05:00 CDT | Baton Rouge LA | 80.0°F | 80.0°F | +0.0° | 48.0 |
| 2026-08-24 06:00 EDT | Augusta ME | 64.0°F | 63.0°F | +1.0° | 48.0 |
| 2026-08-24 06:00 EDT | Annapolis MD | 67.0°F | 65.0°F | +2.0° | 48.0 |
| 2026-08-24 06:00 EDT | Boston MA | 67.0°F | 66.0°F | +1.0° | 48.0 |
| 2026-08-24 06:00 EDT | Lansing MI | 53.0°F | 53.0°F | +0.0° | 48.0 |
| 2026-08-24 05:00 CDT | Saint Paul MN | 58.0°F | 58.0°F | +0.0° | 48.0 |
| 2026-08-24 05:00 CDT | Jackson MS | 76.0°F | 79.0°F | -3.0° | 48.0 |
| 2026-08-24 05:00 CDT | Jefferson City MO | 66.0°F | 60.0°F | +6.0° | 48.0 |
| 2026-08-24 04:00 MDT | Helena MT | 58.0°F | 59.0°F | -1.0° | 48.0 |
| 2026-08-24 05:00 CDT | Lincoln NE | 68.0°F | 67.0°F | +1.0° | 48.0 |
| 2026-08-24 03:00 PDT | Carson City NV | 63.0°F | 64.0°F | -1.0° | 48.0 |
| 2026-08-24 06:00 EDT | Concord NH | 60.0°F | 62.0°F | -2.0° | 48.0 |
| 2026-08-24 06:00 EDT | Trenton NJ | 63.0°F | 59.0°F | +4.0° | 48.0 |
| 2026-08-24 04:00 MDT | Santa Fe NM | 65.0°F | 65.0°F | +0.0° | 48.0 |
| 2026-08-24 06:00 EDT | Albany NY | 59.0°F | 60.0°F | -1.0° | 48.0 |
| 2026-08-24 06:00 EDT | Raleigh NC | 67.0°F | 66.0°F | +1.0° | 48.0 |
| 2026-08-24 05:00 CDT | Bismarck ND | 64.0°F | 63.0°F | +1.0° | 48.0 |
| 2026-08-24 06:00 EDT | Columbus OH | 57.0°F | 56.0°F | +1.0° | 48.0 |
| 2026-08-24 05:00 CDT | Oklahoma City OK | 83.0°F | 81.0°F | +2.0° | 48.0 |
| 2026-08-24 03:00 PDT | Salem OR | 61.0°F | 60.0°F | +1.0° | 48.0 |
| 2026-08-24 06:00 EDT | Harrisburg PA | 61.0°F | 61.0°F | +0.0° | 48.0 |
| 2026-08-24 06:00 EDT | Providence RI | 65.0°F | 63.0°F | +2.0° | 48.0 |
| 2026-08-24 06:00 EDT | Columbia SC | 70.0°F | 74.0°F | -4.0° | 48.0 |