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 | 169 | 1.31 | 0.56 | 48.0 |
| Austin TX | 169 | 1.31 | 0.75 | 48.0 |
| Raleigh NC | 169 | 1.50 | 0.45 | 48.0 |
| Baton Rouge LA | 169 | 1.57 | 1.02 | 48.0 |
| Honolulu HI | 169 | 1.76 | -0.28 | 48.0 |
| Providence RI | 169 | 1.83 | -0.29 | 48.0 |
| Lansing MI | 169 | 1.85 | 0.09 | 48.0 |
| Richmond VA | 169 | 1.86 | -0.72 | 48.0 |
| Dover DE | 169 | 1.91 | -0.15 | 48.0 |
| Saint Paul MN | 169 | 1.95 | -0.01 | 48.0 |
| Augusta ME | 169 | 1.98 | -0.42 | 48.0 |
| Charleston WV | 169 | 2.07 | 0.06 | 48.0 |
| Columbus OH | 169 | 2.13 | 0.26 | 48.0 |
| Sacramento CA | 169 | 2.15 | 0.25 | 48.0 |
| Little Rock AR | 169 | 2.17 | -0.80 | 48.0 |
| Oklahoma City OK | 169 | 2.25 | -0.10 | 48.0 |
| Annapolis MD | 169 | 2.30 | 0.15 | 48.0 |
| Boston MA | 169 | 2.31 | 0.01 | 48.0 |
| Albany NY | 169 | 2.33 | 0.75 | 48.0 |
| Harrisburg PA | 169 | 2.33 | 0.41 | 48.0 |
| Hartford CT | 169 | 2.37 | 0.49 | 48.0 |
| Trenton NJ | 169 | 2.38 | 1.37 | 48.0 |
| Carson City NV | 169 | 2.44 | -1.65 | 48.0 |
| Madison WI | 169 | 2.46 | 1.01 | 48.0 |
| Boise ID | 169 | 2.47 | -1.20 | 48.0 |
| Concord NH | 169 | 2.47 | -0.88 | 48.0 |
| Helena MT | 169 | 2.55 | -0.99 | 48.0 |
| Frankfort KY | 169 | 2.61 | 2.04 | 48.0 |
| Nashville TN | 169 | 2.65 | 2.39 | 48.0 |
| Salem OR | 169 | 2.67 | 0.64 | 48.0 |
| Montpelier VT | 169 | 2.67 | 0.38 | 48.0 |
| Indianapolis IN | 169 | 2.72 | 1.60 | 48.0 |
| Lincoln NE | 169 | 2.80 | 1.54 | 48.0 |
| Pierre SD | 169 | 2.86 | -1.89 | 48.0 |
| Des Moines IA | 169 | 2.87 | -0.04 | 48.0 |
| Tallahassee FL | 169 | 2.95 | 1.49 | 48.0 |
| Topeka KS | 169 | 2.99 | 2.24 | 48.0 |
| Jefferson City MO | 169 | 2.99 | 2.42 | 48.0 |
| Bismarck ND | 169 | 3.01 | -2.27 | 48.0 |
| Atlanta GA | 169 | 3.03 | 2.54 | 48.0 |
| Columbia SC | 169 | 3.12 | 2.53 | 48.0 |
| Juneau AK | 169 | 3.21 | 0.84 | 48.0 |
| Olympia WA | 169 | 3.31 | -0.79 | 48.0 |
| Montgomery AL | 169 | 3.44 | 2.28 | 48.0 |
| Salt Lake City UT | 169 | 3.50 | -2.54 | 48.0 |
| Springfield IL | 169 | 3.55 | 2.99 | 48.0 |
| Phoenix AZ | 169 | 3.56 | -1.47 | 48.0 |
| Santa Fe NM | 169 | 3.67 | -1.02 | 48.0 |
| Cheyenne WY | 169 | 3.67 | 0.50 | 48.0 |
| Denver CO | 169 | 3.76 | 1.20 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-08-20 19:00 CDT | Montgomery AL | 91.0°F | 92.0°F | -1.0° | 48.0 |
| 2026-08-20 16:00 AKDT | Juneau AK | 58.0°F | 56.0°F | +2.0° | 48.0 |
| 2026-08-20 17:00 MST | Phoenix AZ | 107.0°F | 105.0°F | +2.0° | 48.0 |
| 2026-08-20 19:00 CDT | Little Rock AR | 94.0°F | 102.0°F | -8.0° | 48.0 |
| 2026-08-20 17:00 PDT | Sacramento CA | 93.0°F | 91.0°F | +2.0° | 48.0 |
| 2026-08-20 18:00 MDT | Denver CO | 91.0°F | 91.0°F | +0.0° | 48.0 |
| 2026-08-20 20:00 EDT | Hartford CT | 74.0°F | 68.0°F | +6.0° | 48.0 |
| 2026-08-20 20:00 EDT | Dover DE | 75.0°F | 73.0°F | +2.0° | 48.0 |
| 2026-08-20 20:00 EDT | Tallahassee FL | 84.0°F | 79.0°F | +5.0° | 48.0 |
| 2026-08-20 20:00 EDT | Atlanta GA | 90.0°F | 91.0°F | -1.0° | 48.0 |
| 2026-08-20 14:00 HST | Honolulu HI | 87.0°F | 85.0°F | +2.0° | 48.0 |
| 2026-08-20 18:00 MDT | Boise ID | 99.0°F | 96.0°F | +3.0° | 48.0 |
| 2026-08-20 19:00 CDT | Springfield IL | 78.0°F | 79.0°F | -1.0° | 48.0 |
| 2026-08-20 20:00 EDT | Indianapolis IN | 76.0°F | 80.0°F | -4.0° | 48.0 |
| 2026-08-20 19:00 CDT | Des Moines IA | 80.0°F | 83.0°F | -3.0° | 48.0 |
| 2026-08-20 19:00 CDT | Topeka KS | 85.0°F | 85.0°F | +0.0° | 48.0 |
| 2026-08-20 20:00 EDT | Frankfort KY | 77.0°F | 77.0°F | +0.0° | 48.0 |
| 2026-08-20 19:00 CDT | Baton Rouge LA | 95.0°F | 92.0°F | +3.0° | 48.0 |
| 2026-08-20 20:00 EDT | Augusta ME | 70.0°F | 72.0°F | -2.0° | 48.0 |
| 2026-08-20 20:00 EDT | Annapolis MD | 78.0°F | 74.0°F | +4.0° | 48.0 |
| 2026-08-20 20:00 EDT | Boston MA | 75.0°F | 75.0°F | +0.0° | 48.0 |
| 2026-08-20 20:00 EDT | Lansing MI | 76.0°F | 73.0°F | +3.0° | 48.0 |
| 2026-08-20 19:00 CDT | Saint Paul MN | 78.0°F | 78.0°F | +0.0° | 48.0 |
| 2026-08-20 19:00 CDT | Jackson MS | 95.0°F | 96.0°F | -1.0° | 48.0 |
| 2026-08-20 19:00 CDT | Jefferson City MO | 81.0°F | 82.0°F | -1.0° | 48.0 |
| 2026-08-20 18:00 MDT | Helena MT | 89.0°F | 93.0°F | -4.0° | 48.0 |
| 2026-08-20 19:00 CDT | Lincoln NE | 84.0°F | 79.0°F | +5.0° | 48.0 |
| 2026-08-20 17:00 PDT | Carson City NV | 91.0°F | 91.0°F | +0.0° | 48.0 |
| 2026-08-20 20:00 EDT | Concord NH | 72.0°F | 70.0°F | +2.0° | 48.0 |
| 2026-08-20 20:00 EDT | Trenton NJ | 75.0°F | 67.0°F | +8.0° | 48.0 |
| 2026-08-20 18:00 MDT | Santa Fe NM | 79.0°F | 84.0°F | -5.0° | 48.0 |
| 2026-08-20 20:00 EDT | Albany NY | 70.0°F | 62.0°F | +8.0° | 48.0 |
| 2026-08-20 20:00 EDT | Raleigh NC | 84.0°F | 85.0°F | -1.0° | 48.0 |
| 2026-08-20 19:00 CDT | Bismarck ND | 84.0°F | 85.0°F | -1.0° | 48.0 |
| 2026-08-20 20:00 EDT | Columbus OH | 74.0°F | 77.0°F | -3.0° | 48.0 |
| 2026-08-20 19:00 CDT | Oklahoma City OK | 99.0°F | 104.0°F | -5.0° | 48.0 |
| 2026-08-20 17:00 PDT | Salem OR | 87.0°F | 92.0°F | -5.0° | 48.0 |
| 2026-08-20 20:00 EDT | Harrisburg PA | 75.0°F | 69.0°F | +6.0° | 48.0 |
| 2026-08-20 20:00 EDT | Providence RI | 75.0°F | 77.0°F | -2.0° | 48.0 |
| 2026-08-20 20:00 EDT | Columbia SC | 88.0°F | 90.0°F | -2.0° | 48.0 |