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) |
|---|---|---|---|---|
| Honolulu HI | 187 | 1.52 | -0.95 | 48.0 |
| Providence RI | 187 | 1.56 | 0.06 | 48.0 |
| Augusta ME | 187 | 1.64 | -0.30 | 48.0 |
| Hartford CT | 187 | 1.78 | 0.16 | 48.0 |
| Little Rock AR | 187 | 1.89 | -0.34 | 48.0 |
| Jackson MS | 187 | 1.93 | 1.12 | 48.0 |
| Tallahassee FL | 187 | 1.97 | -0.11 | 48.0 |
| Austin TX | 187 | 1.97 | 1.40 | 48.0 |
| Trenton NJ | 187 | 2.00 | 0.13 | 48.0 |
| Concord NH | 187 | 2.06 | 0.73 | 48.0 |
| Baton Rouge LA | 187 | 2.07 | 1.56 | 48.0 |
| Charleston WV | 187 | 2.07 | -0.25 | 48.0 |
| Albany NY | 187 | 2.11 | 0.36 | 48.0 |
| Atlanta GA | 187 | 2.16 | 0.42 | 48.0 |
| Harrisburg PA | 187 | 2.16 | -0.29 | 48.0 |
| Lansing MI | 187 | 2.24 | 0.83 | 48.0 |
| Indianapolis IN | 187 | 2.25 | 0.67 | 48.0 |
| Columbus OH | 187 | 2.29 | 1.35 | 48.0 |
| Boston MA | 187 | 2.37 | 1.18 | 48.0 |
| Dover DE | 187 | 2.43 | 0.64 | 48.0 |
| Jefferson City MO | 187 | 2.43 | 0.76 | 48.0 |
| Richmond VA | 187 | 2.43 | 0.49 | 48.0 |
| Helena MT | 187 | 2.51 | 1.12 | 48.0 |
| Annapolis MD | 187 | 2.54 | 1.10 | 48.0 |
| Raleigh NC | 187 | 2.64 | 0.78 | 48.0 |
| Montgomery AL | 187 | 2.65 | 1.17 | 48.0 |
| Juneau AK | 187 | 2.67 | 0.66 | 48.0 |
| Nashville TN | 187 | 2.70 | 0.68 | 48.0 |
| Springfield IL | 187 | 2.80 | 2.34 | 48.0 |
| Topeka KS | 187 | 2.81 | 0.76 | 48.0 |
| Carson City NV | 187 | 2.81 | 1.09 | 48.0 |
| Columbia SC | 187 | 2.81 | -1.84 | 48.0 |
| Salt Lake City UT | 187 | 2.86 | -2.03 | 48.0 |
| Saint Paul MN | 187 | 2.92 | 1.93 | 48.0 |
| Santa Fe NM | 187 | 2.97 | -0.98 | 48.0 |
| Sacramento CA | 187 | 3.01 | 0.73 | 48.0 |
| Des Moines IA | 187 | 3.04 | 0.97 | 48.0 |
| Salem OR | 187 | 3.12 | 1.31 | 48.0 |
| Madison WI | 187 | 3.14 | 1.48 | 48.0 |
| Cheyenne WY | 187 | 3.15 | -0.12 | 48.0 |
| Olympia WA | 187 | 3.19 | -1.42 | 48.0 |
| Montpelier VT | 187 | 3.32 | 1.51 | 48.0 |
| Boise ID | 187 | 3.37 | 2.83 | 48.0 |
| Lincoln NE | 187 | 3.39 | 1.74 | 48.0 |
| Phoenix AZ | 187 | 3.42 | -0.44 | 48.0 |
| Frankfort KY | 187 | 3.50 | 2.67 | 48.0 |
| Denver CO | 187 | 3.57 | 0.76 | 48.0 |
| Oklahoma City OK | 187 | 3.67 | 3.20 | 48.0 |
| Bismarck ND | 187 | 3.93 | 3.17 | 48.0 |
| Pierre SD | 187 | 4.32 | 3.33 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-07-27 13:00 CDT | Montgomery AL | 92.0°F | 86.0°F | +6.0° | 48.0 |
| 2026-07-27 10:00 AKDT | Juneau AK | 55.0°F | 56.0°F | -1.0° | 48.0 |
| 2026-07-27 11:00 MST | Phoenix AZ | 103.0°F | 101.0°F | +2.0° | 48.0 |
| 2026-07-27 13:00 CDT | Little Rock AR | 99.0°F | 97.0°F | +2.0° | 48.0 |
| 2026-07-27 11:00 PDT | Sacramento CA | 77.0°F | 72.0°F | +5.0° | 48.0 |
| 2026-07-27 12:00 MDT | Denver CO | 94.0°F | 84.0°F | +10.0° | 48.0 |
| 2026-07-27 14:00 EDT | Hartford CT | 83.0°F | 81.0°F | +2.0° | 48.0 |
| 2026-07-27 14:00 EDT | Dover DE | 86.0°F | 75.0°F | +11.0° | 48.0 |
| 2026-07-27 14:00 EDT | Tallahassee FL | 96.0°F | 94.0°F | +2.0° | 48.0 |
| 2026-07-27 14:00 EDT | Atlanta GA | 90.0°F | 83.0°F | +7.0° | 48.0 |
| 2026-07-27 08:00 HST | Honolulu HI | 78.0°F | 79.0°F | -1.0° | 48.0 |
| 2026-07-27 12:00 MDT | Boise ID | 83.0°F | 77.0°F | +6.0° | 48.0 |
| 2026-07-27 13:00 CDT | Springfield IL | 95.0°F | 87.0°F | +8.0° | 48.0 |
| 2026-07-27 14:00 EDT | Indianapolis IN | 92.0°F | 89.0°F | +3.0° | 48.0 |
| 2026-07-27 13:00 CDT | Des Moines IA | 93.0°F | 90.0°F | +3.0° | 48.0 |
| 2026-07-27 13:00 CDT | Topeka KS | 98.0°F | 93.0°F | +5.0° | 48.0 |
| 2026-07-27 14:00 EDT | Frankfort KY | 92.0°F | 85.0°F | +7.0° | 48.0 |
| 2026-07-27 13:00 CDT | Baton Rouge LA | 94.0°F | 90.0°F | +4.0° | 48.0 |
| 2026-07-27 14:00 EDT | Augusta ME | 82.0°F | 81.0°F | +1.0° | 48.0 |
| 2026-07-27 14:00 EDT | Annapolis MD | 86.0°F | 81.0°F | +5.0° | 48.0 |
| 2026-07-27 14:00 EDT | Boston MA | 77.0°F | 73.0°F | +4.0° | 48.0 |
| 2026-07-27 14:00 EDT | Lansing MI | 85.0°F | 82.0°F | +3.0° | 48.0 |
| 2026-07-27 13:00 CDT | Saint Paul MN | 92.0°F | 95.0°F | -3.0° | 48.0 |
| 2026-07-27 13:00 CDT | Jackson MS | 96.0°F | 93.0°F | +3.0° | 48.0 |
| 2026-07-27 13:00 CDT | Jefferson City MO | 95.0°F | 92.0°F | +3.0° | 48.0 |
| 2026-07-27 12:00 MDT | Helena MT | 82.0°F | 78.0°F | +4.0° | 48.0 |
| 2026-07-27 13:00 CDT | Lincoln NE | 98.0°F | 95.0°F | +3.0° | 48.0 |
| 2026-07-27 11:00 PDT | Carson City NV | 83.0°F | 79.0°F | +4.0° | 48.0 |
| 2026-07-27 14:00 EDT | Concord NH | 84.0°F | 83.0°F | +1.0° | 48.0 |
| 2026-07-27 14:00 EDT | Trenton NJ | 85.0°F | 83.0°F | +2.0° | 48.0 |
| 2026-07-27 12:00 MDT | Santa Fe NM | 87.0°F | 85.0°F | +2.0° | 48.0 |
| 2026-07-27 14:00 EDT | Albany NY | 81.0°F | 83.0°F | -2.0° | 48.0 |
| 2026-07-27 14:00 EDT | Raleigh NC | 89.0°F | 84.0°F | +5.0° | 48.0 |
| 2026-07-27 13:00 CDT | Bismarck ND | 92.0°F | 87.0°F | +5.0° | 48.0 |
| 2026-07-27 14:00 EDT | Columbus OH | 87.0°F | 84.0°F | +3.0° | 48.0 |
| 2026-07-27 13:00 CDT | Oklahoma City OK | 99.0°F | 96.0°F | +3.0° | 48.0 |
| 2026-07-27 11:00 PDT | Salem OR | 71.0°F | 65.0°F | +6.0° | 48.0 |
| 2026-07-27 14:00 EDT | Harrisburg PA | 85.0°F | 83.0°F | +2.0° | 48.0 |
| 2026-07-27 14:00 EDT | Providence RI | 80.0°F | 79.0°F | +1.0° | 48.0 |
| 2026-07-27 14:00 EDT | Columbia SC | 91.0°F | 90.0°F | +1.0° | 48.0 |