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 | 187 | 1.61 | -0.70 | 48.0 |
| Columbus OH | 187 | 1.70 | -1.14 | 48.0 |
| Salem OR | 187 | 1.72 | 0.30 | 48.0 |
| Providence RI | 187 | 1.73 | -0.54 | 48.0 |
| Hartford CT | 187 | 1.86 | -0.76 | 48.0 |
| Topeka KS | 187 | 1.87 | -0.23 | 48.0 |
| Indianapolis IN | 187 | 1.91 | -1.07 | 48.0 |
| Nashville TN | 187 | 1.96 | 0.75 | 48.0 |
| Lansing MI | 187 | 1.97 | 0.90 | 48.0 |
| Saint Paul MN | 187 | 1.99 | 0.37 | 48.0 |
| Sacramento CA | 187 | 2.04 | 0.75 | 48.0 |
| Concord NH | 187 | 2.09 | 0.00 | 48.0 |
| Raleigh NC | 187 | 2.11 | 0.36 | 48.0 |
| Annapolis MD | 187 | 2.12 | 0.55 | 48.0 |
| Honolulu HI | 187 | 2.16 | -2.06 | 48.0 |
| Charleston WV | 187 | 2.16 | 1.66 | 48.0 |
| Tallahassee FL | 187 | 2.19 | -0.27 | 48.0 |
| Frankfort KY | 187 | 2.20 | 1.33 | 48.0 |
| Boston MA | 187 | 2.20 | -0.38 | 48.0 |
| Atlanta GA | 187 | 2.27 | 0.47 | 48.0 |
| Jefferson City MO | 187 | 2.28 | 1.45 | 48.0 |
| Columbia SC | 187 | 2.29 | -0.45 | 48.0 |
| Des Moines IA | 187 | 2.34 | 1.75 | 48.0 |
| Albany NY | 187 | 2.34 | 0.05 | 48.0 |
| Pierre SD | 187 | 2.34 | 1.36 | 48.0 |
| Juneau AK | 187 | 2.37 | 1.50 | 48.0 |
| Jackson MS | 187 | 2.37 | 0.75 | 48.0 |
| Montpelier VT | 187 | 2.42 | 1.24 | 48.0 |
| Augusta ME | 187 | 2.45 | 0.24 | 48.0 |
| Trenton NJ | 187 | 2.57 | 1.91 | 48.0 |
| Bismarck ND | 187 | 2.62 | -0.73 | 48.0 |
| Carson City NV | 187 | 2.65 | 0.05 | 48.0 |
| Austin TX | 187 | 2.67 | 2.19 | 48.0 |
| Madison WI | 187 | 2.69 | 1.03 | 48.0 |
| Dover DE | 187 | 2.70 | -0.61 | 48.0 |
| Olympia WA | 187 | 2.75 | -0.93 | 48.0 |
| Oklahoma City OK | 187 | 2.79 | -0.32 | 48.0 |
| Helena MT | 187 | 2.81 | -0.66 | 48.0 |
| Springfield IL | 187 | 2.86 | 2.23 | 48.0 |
| Boise ID | 187 | 2.88 | -1.87 | 48.0 |
| Lincoln NE | 187 | 2.88 | 1.78 | 48.0 |
| Salt Lake City UT | 187 | 2.90 | -0.50 | 48.0 |
| Montgomery AL | 187 | 2.99 | -1.75 | 48.0 |
| Cheyenne WY | 187 | 3.06 | -0.07 | 48.0 |
| Phoenix AZ | 187 | 3.13 | -1.50 | 48.0 |
| Little Rock AR | 187 | 3.13 | 1.29 | 48.0 |
| Harrisburg PA | 187 | 3.30 | -0.99 | 48.0 |
| Baton Rouge LA | 187 | 3.37 | 0.86 | 48.0 |
| Santa Fe NM | 187 | 3.39 | -1.58 | 48.0 |
| Denver CO | 187 | 3.41 | 2.32 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-08-31 13:00 CDT | Montgomery AL | 93.0°F | 92.0°F | +1.0° | 48.0 |
| 2026-08-31 10:00 AKDT | Juneau AK | 53.0°F | 55.0°F | -2.0° | 48.0 |
| 2026-08-31 11:00 MST | Phoenix AZ | 94.0°F | 78.0°F | +16.0° | 48.0 |
| 2026-08-31 13:00 CDT | Little Rock AR | 96.0°F | 94.0°F | +2.0° | 48.0 |
| 2026-08-31 11:00 PDT | Sacramento CA | 72.0°F | 65.0°F | +7.0° | 48.0 |
| 2026-08-31 12:00 MDT | Denver CO | 80.0°F | 78.0°F | +2.0° | 48.0 |
| 2026-08-31 14:00 EDT | Hartford CT | 81.0°F | 79.0°F | +2.0° | 48.0 |
| 2026-08-31 14:00 EDT | Dover DE | 86.0°F | 82.0°F | +4.0° | 48.0 |
| 2026-08-31 14:00 EDT | Tallahassee FL | 91.0°F | 91.0°F | +0.0° | 48.0 |
| 2026-08-31 14:00 EDT | Atlanta GA | 90.0°F | 89.0°F | +1.0° | 48.0 |
| 2026-08-31 08:00 HST | Honolulu HI | 78.0°F | 81.0°F | -3.0° | 48.0 |
| 2026-08-31 12:00 MDT | Boise ID | 75.0°F | 72.0°F | +3.0° | 48.0 |
| 2026-08-31 13:00 CDT | Springfield IL | 96.0°F | 93.0°F | +3.0° | 48.0 |
| 2026-08-31 14:00 EDT | Indianapolis IN | 90.0°F | 90.0°F | +0.0° | 48.0 |
| 2026-08-31 13:00 CDT | Des Moines IA | 91.0°F | 88.0°F | +3.0° | 48.0 |
| 2026-08-31 13:00 CDT | Topeka KS | 97.0°F | 96.0°F | +1.0° | 48.0 |
| 2026-08-31 14:00 EDT | Frankfort KY | 92.0°F | 91.0°F | +1.0° | 48.0 |
| 2026-08-31 13:00 CDT | Baton Rouge LA | 90.0°F | 92.0°F | -2.0° | 48.0 |
| 2026-08-31 14:00 EDT | Augusta ME | 77.0°F | 72.0°F | +5.0° | 48.0 |
| 2026-08-31 14:00 EDT | Annapolis MD | 89.0°F | 83.0°F | +6.0° | 48.0 |
| 2026-08-31 14:00 EDT | Boston MA | 76.0°F | 71.0°F | +5.0° | 48.0 |
| 2026-08-31 14:00 EDT | Lansing MI | 85.0°F | 83.0°F | +2.0° | 48.0 |
| 2026-08-31 13:00 CDT | Saint Paul MN | 86.0°F | 88.0°F | -2.0° | 48.0 |
| 2026-08-31 13:00 CDT | Jackson MS | 92.0°F | 92.0°F | +0.0° | 48.0 |
| 2026-08-31 13:00 CDT | Jefferson City MO | 96.0°F | 95.0°F | +1.0° | 48.0 |
| 2026-08-31 12:00 MDT | Helena MT | 66.0°F | 67.0°F | -1.0° | 48.0 |
| 2026-08-31 13:00 CDT | Lincoln NE | 92.0°F | 87.0°F | +5.0° | 48.0 |
| 2026-08-31 11:00 PDT | Carson City NV | 78.0°F | 75.0°F | +3.0° | 48.0 |
| 2026-08-31 14:00 EDT | Concord NH | 79.0°F | 80.0°F | -1.0° | 48.0 |
| 2026-08-31 14:00 EDT | Trenton NJ | 83.0°F | 77.0°F | +6.0° | 48.0 |
| 2026-08-31 12:00 MDT | Santa Fe NM | 80.0°F | 82.0°F | -2.0° | 48.0 |
| 2026-08-31 14:00 EDT | Albany NY | 79.0°F | 74.0°F | +5.0° | 48.0 |
| 2026-08-31 14:00 EDT | Raleigh NC | 93.0°F | 93.0°F | +0.0° | 48.0 |
| 2026-08-31 13:00 CDT | Bismarck ND | 75.0°F | 77.0°F | -2.0° | 48.0 |
| 2026-08-31 14:00 EDT | Columbus OH | 88.0°F | 88.0°F | +0.0° | 48.0 |
| 2026-08-31 13:00 CDT | Oklahoma City OK | 96.0°F | 98.0°F | -2.0° | 48.0 |
| 2026-08-31 11:00 PDT | Salem OR | 66.0°F | 66.0°F | +0.0° | 48.0 |
| 2026-08-31 14:00 EDT | Harrisburg PA | 86.0°F | 78.0°F | +8.0° | 48.0 |
| 2026-08-31 14:00 EDT | Providence RI | 80.0°F | 77.0°F | +3.0° | 48.0 |
| 2026-08-31 14:00 EDT | Columbia SC | 92.0°F | 90.0°F | +2.0° | 48.0 |