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 | 188 | 1.46 | -0.69 | 48.0 |
| Honolulu HI | 188 | 1.63 | -1.34 | 48.0 |
| Nashville TN | 188 | 1.86 | 0.03 | 48.0 |
| Salem OR | 188 | 1.87 | 1.02 | 48.0 |
| Lansing MI | 188 | 1.89 | 0.34 | 48.0 |
| Little Rock AR | 188 | 1.98 | -0.38 | 48.0 |
| Charleston WV | 188 | 2.05 | 1.35 | 48.0 |
| Raleigh NC | 188 | 2.08 | -0.53 | 48.0 |
| Columbus OH | 188 | 2.08 | -0.13 | 48.0 |
| Baton Rouge LA | 188 | 2.12 | 1.54 | 48.0 |
| Jefferson City MO | 188 | 2.14 | 1.25 | 48.0 |
| Trenton NJ | 188 | 2.15 | -0.99 | 48.0 |
| Sacramento CA | 188 | 2.19 | 1.68 | 48.0 |
| Boston MA | 188 | 2.21 | 0.06 | 48.0 |
| Oklahoma City OK | 188 | 2.27 | 1.03 | 48.0 |
| Dover DE | 188 | 2.29 | -0.96 | 48.0 |
| Topeka KS | 188 | 2.29 | 1.20 | 48.0 |
| Austin TX | 188 | 2.29 | 2.14 | 48.0 |
| Providence RI | 188 | 2.31 | -0.63 | 48.0 |
| Augusta ME | 188 | 2.33 | -1.46 | 48.0 |
| Annapolis MD | 188 | 2.34 | 0.49 | 48.0 |
| Saint Paul MN | 188 | 2.36 | 0.14 | 48.0 |
| Indianapolis IN | 188 | 2.38 | 0.11 | 48.0 |
| Jackson MS | 188 | 2.38 | 1.24 | 48.0 |
| Juneau AK | 188 | 2.44 | 0.84 | 48.0 |
| Harrisburg PA | 188 | 2.44 | -0.38 | 48.0 |
| Montpelier VT | 188 | 2.51 | 1.04 | 48.0 |
| Frankfort KY | 188 | 2.53 | 1.85 | 48.0 |
| Atlanta GA | 188 | 2.54 | 0.74 | 48.0 |
| Carson City NV | 188 | 2.56 | 1.84 | 48.0 |
| Des Moines IA | 188 | 2.57 | -0.04 | 48.0 |
| Helena MT | 188 | 2.57 | 0.30 | 48.0 |
| Springfield IL | 188 | 2.59 | 1.98 | 48.0 |
| Madison WI | 188 | 2.71 | 1.13 | 48.0 |
| Columbia SC | 188 | 2.74 | 0.34 | 48.0 |
| Hartford CT | 188 | 2.76 | -1.59 | 48.0 |
| Phoenix AZ | 188 | 2.79 | -1.10 | 48.0 |
| Boise ID | 188 | 2.82 | -0.18 | 48.0 |
| Albany NY | 188 | 2.84 | -0.36 | 48.0 |
| Lincoln NE | 188 | 2.85 | 2.01 | 48.0 |
| Montgomery AL | 188 | 2.87 | -0.87 | 48.0 |
| Salt Lake City UT | 188 | 2.90 | 1.71 | 48.0 |
| Tallahassee FL | 188 | 2.99 | 0.24 | 48.0 |
| Olympia WA | 188 | 3.00 | -0.35 | 48.0 |
| Pierre SD | 188 | 3.14 | 1.79 | 48.0 |
| Cheyenne WY | 188 | 3.16 | 0.64 | 48.0 |
| Santa Fe NM | 188 | 3.22 | -1.19 | 48.0 |
| Bismarck ND | 188 | 3.28 | 0.73 | 48.0 |
| Denver CO | 188 | 3.33 | 1.73 | 48.0 |
| Concord NH | 188 | 3.39 | -2.11 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-08-04 14:00 CDT | Montgomery AL | 90.0°F | 87.0°F | +3.0° | 48.0 |
| 2026-08-04 11:00 AKDT | Juneau AK | 57.0°F | 58.0°F | -1.0° | 48.0 |
| 2026-08-04 12:00 MST | Phoenix AZ | 104.0°F | 97.0°F | +7.0° | 48.0 |
| 2026-08-04 14:00 CDT | Little Rock AR | 94.0°F | 93.0°F | +1.0° | 48.0 |
| 2026-08-04 12:00 PDT | Sacramento CA | 88.0°F | 84.0°F | +4.0° | 48.0 |
| 2026-08-04 13:00 MDT | Denver CO | 75.0°F | 64.0°F | +11.0° | 48.0 |
| 2026-08-04 15:00 EDT | Hartford CT | 82.0°F | 85.0°F | -3.0° | 48.0 |
| 2026-08-04 15:00 EDT | Dover DE | 82.0°F | 82.0°F | +0.0° | 48.0 |
| 2026-08-04 15:00 EDT | Tallahassee FL | 88.0°F | 91.0°F | -3.0° | 48.0 |
| 2026-08-04 15:00 EDT | Atlanta GA | 86.0°F | 76.0°F | +10.0° | 48.0 |
| 2026-08-04 09:00 HST | Honolulu HI | 81.0°F | 81.0°F | +0.0° | 48.0 |
| 2026-08-04 13:00 MDT | Boise ID | 80.0°F | 78.0°F | +2.0° | 48.0 |
| 2026-08-04 14:00 CDT | Springfield IL | 84.0°F | 83.0°F | +1.0° | 48.0 |
| 2026-08-04 15:00 EDT | Indianapolis IN | 81.0°F | 83.0°F | -2.0° | 48.0 |
| 2026-08-04 14:00 CDT | Des Moines IA | 83.0°F | 75.0°F | +8.0° | 48.0 |
| 2026-08-04 14:00 CDT | Topeka KS | 90.0°F | 85.0°F | +5.0° | 48.0 |
| 2026-08-04 15:00 EDT | Frankfort KY | 84.0°F | 82.0°F | +2.0° | 48.0 |
| 2026-08-04 14:00 CDT | Baton Rouge LA | 95.0°F | 93.0°F | +2.0° | 48.0 |
| 2026-08-04 15:00 EDT | Augusta ME | 83.0°F | 84.0°F | -1.0° | 48.0 |
| 2026-08-04 15:00 EDT | Annapolis MD | 84.0°F | 82.0°F | +2.0° | 48.0 |
| 2026-08-04 15:00 EDT | Boston MA | 81.0°F | 85.0°F | -4.0° | 48.0 |
| 2026-08-04 15:00 EDT | Lansing MI | 85.0°F | 82.0°F | +3.0° | 48.0 |
| 2026-08-04 14:00 CDT | Saint Paul MN | 74.0°F | 75.0°F | -1.0° | 48.0 |
| 2026-08-04 14:00 CDT | Jackson MS | 94.0°F | 90.0°F | +4.0° | 48.0 |
| 2026-08-04 14:00 CDT | Jefferson City MO | 89.0°F | 86.0°F | +3.0° | 48.0 |
| 2026-08-04 13:00 MDT | Helena MT | 72.0°F | 70.0°F | +2.0° | 48.0 |
| 2026-08-04 14:00 CDT | Lincoln NE | 84.0°F | 68.0°F | +16.0° | 48.0 |
| 2026-08-04 12:00 PDT | Carson City NV | 91.0°F | 88.0°F | +3.0° | 48.0 |
| 2026-08-04 15:00 EDT | Concord NH | 83.0°F | 86.0°F | -3.0° | 48.0 |
| 2026-08-04 15:00 EDT | Trenton NJ | 83.0°F | 83.0°F | +0.0° | 48.0 |
| 2026-08-04 13:00 MDT | Santa Fe NM | 90.0°F | 92.0°F | -2.0° | 48.0 |
| 2026-08-04 15:00 EDT | Albany NY | 81.0°F | 84.0°F | -3.0° | 48.0 |
| 2026-08-04 15:00 EDT | Raleigh NC | 84.0°F | 82.0°F | +2.0° | 48.0 |
| 2026-08-04 14:00 CDT | Bismarck ND | 73.0°F | 72.0°F | +1.0° | 48.0 |
| 2026-08-04 15:00 EDT | Columbus OH | 84.0°F | 84.0°F | +0.0° | 48.0 |
| 2026-08-04 14:00 CDT | Oklahoma City OK | 99.0°F | 100.0°F | -1.0° | 48.0 |
| 2026-08-04 12:00 PDT | Salem OR | 86.0°F | 75.0°F | +11.0° | 48.0 |
| 2026-08-04 15:00 EDT | Harrisburg PA | 82.0°F | 82.0°F | +0.0° | 48.0 |
| 2026-08-04 15:00 EDT | Providence RI | 82.0°F | 83.0°F | -1.0° | 48.0 |
| 2026-08-04 15:00 EDT | Columbia SC | 89.0°F | 89.0°F | +0.0° | 48.0 |