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) |
|---|---|---|---|---|
| Des Moines IA | 185 | 1.74 | 0.05 | 48.0 |
| Saint Paul MN | 185 | 1.74 | -0.29 | 48.0 |
| Lansing MI | 185 | 1.77 | 0.78 | 48.0 |
| Richmond VA | 185 | 1.80 | -0.15 | 48.0 |
| Columbus OH | 185 | 1.89 | -1.54 | 48.0 |
| Frankfort KY | 185 | 1.95 | 0.95 | 48.0 |
| Sacramento CA | 185 | 2.01 | 0.64 | 48.0 |
| Atlanta GA | 185 | 2.02 | 1.09 | 48.0 |
| Pierre SD | 185 | 2.02 | 1.08 | 48.0 |
| Charleston WV | 185 | 2.03 | 1.07 | 48.0 |
| Madison WI | 185 | 2.05 | 0.96 | 48.0 |
| Jefferson City MO | 185 | 2.10 | 1.22 | 48.0 |
| Tallahassee FL | 185 | 2.11 | 0.35 | 48.0 |
| Annapolis MD | 185 | 2.11 | 0.63 | 48.0 |
| Boston MA | 185 | 2.17 | 0.38 | 48.0 |
| Trenton NJ | 185 | 2.17 | 1.14 | 48.0 |
| Indianapolis IN | 185 | 2.21 | -1.64 | 48.0 |
| Providence RI | 185 | 2.23 | 0.19 | 48.0 |
| Nashville TN | 185 | 2.24 | 0.35 | 48.0 |
| Lincoln NE | 185 | 2.25 | 0.74 | 48.0 |
| Honolulu HI | 185 | 2.27 | -2.08 | 48.0 |
| Austin TX | 185 | 2.27 | 1.82 | 48.0 |
| Topeka KS | 185 | 2.28 | 1.04 | 48.0 |
| Augusta ME | 185 | 2.28 | -1.69 | 48.0 |
| Albany NY | 185 | 2.28 | -0.64 | 48.0 |
| Harrisburg PA | 185 | 2.28 | 0.44 | 48.0 |
| Hartford CT | 185 | 2.34 | -0.48 | 48.0 |
| Salem OR | 185 | 2.41 | 0.30 | 48.0 |
| Concord NH | 185 | 2.43 | -0.66 | 48.0 |
| Montpelier VT | 185 | 2.44 | 1.34 | 48.0 |
| Juneau AK | 185 | 2.50 | 1.56 | 48.0 |
| Raleigh NC | 185 | 2.54 | 0.79 | 48.0 |
| Phoenix AZ | 185 | 2.65 | -1.56 | 48.0 |
| Dover DE | 185 | 2.66 | -0.91 | 48.0 |
| Carson City NV | 185 | 2.72 | -1.81 | 48.0 |
| Bismarck ND | 185 | 2.79 | -0.31 | 48.0 |
| Columbia SC | 185 | 2.83 | 0.25 | 48.0 |
| Cheyenne WY | 185 | 2.84 | -0.30 | 48.0 |
| Montgomery AL | 185 | 2.85 | -1.25 | 48.0 |
| Boise ID | 185 | 2.86 | -2.11 | 48.0 |
| Santa Fe NM | 185 | 2.89 | -0.33 | 48.0 |
| Denver CO | 185 | 2.91 | 0.77 | 48.0 |
| Springfield IL | 185 | 2.94 | 2.21 | 48.0 |
| Helena MT | 185 | 3.03 | -0.20 | 48.0 |
| Jackson MS | 185 | 3.05 | 1.59 | 48.0 |
| Oklahoma City OK | 185 | 3.15 | 0.66 | 48.0 |
| Salt Lake City UT | 185 | 3.18 | -0.26 | 48.0 |
| Olympia WA | 185 | 3.19 | -1.51 | 48.0 |
| Baton Rouge LA | 185 | 3.62 | 2.67 | 48.0 |
| Little Rock AR | 185 | 3.75 | 0.77 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-08-28 11:00 CDT | Montgomery AL | 84.0°F | 87.0°F | -3.0° | 48.0 |
| 2026-08-28 08:00 AKDT | Juneau AK | 52.0°F | 48.0°F | +4.0° | 48.0 |
| 2026-08-28 09:00 MST | Phoenix AZ | 98.0°F | 99.0°F | -1.0° | 48.0 |
| 2026-08-28 11:00 CDT | Little Rock AR | 84.0°F | 85.0°F | -1.0° | 48.0 |
| 2026-08-28 09:00 PDT | Sacramento CA | 71.0°F | 71.0°F | +0.0° | 48.0 |
| 2026-08-28 10:00 MDT | Denver CO | 79.0°F | 81.0°F | -2.0° | 48.0 |
| 2026-08-28 12:00 EDT | Hartford CT | 78.0°F | 79.0°F | -1.0° | 48.0 |
| 2026-08-28 12:00 EDT | Dover DE | 81.0°F | 79.0°F | +2.0° | 48.0 |
| 2026-08-28 12:00 EDT | Tallahassee FL | 85.0°F | 82.0°F | +3.0° | 48.0 |
| 2026-08-28 12:00 EDT | Atlanta GA | 84.0°F | 85.0°F | -1.0° | 48.0 |
| 2026-08-28 06:00 HST | Honolulu HI | 76.0°F | 78.0°F | -2.0° | 48.0 |
| 2026-08-28 10:00 MDT | Boise ID | 68.0°F | 70.0°F | -2.0° | 48.0 |
| 2026-08-28 11:00 CDT | Springfield IL | 77.0°F | 80.0°F | -3.0° | 48.0 |
| 2026-08-28 12:00 EDT | Indianapolis IN | 75.0°F | 78.0°F | -3.0° | 48.0 |
| 2026-08-28 11:00 CDT | Des Moines IA | 76.0°F | 78.0°F | -2.0° | 48.0 |
| 2026-08-28 11:00 CDT | Topeka KS | 78.0°F | 80.0°F | -2.0° | 48.0 |
| 2026-08-28 12:00 EDT | Frankfort KY | 82.0°F | 81.0°F | +1.0° | 48.0 |
| 2026-08-28 11:00 CDT | Baton Rouge LA | 85.0°F | 89.0°F | -4.0° | 48.0 |
| 2026-08-28 12:00 EDT | Augusta ME | 76.0°F | 79.0°F | -3.0° | 48.0 |
| 2026-08-28 12:00 EDT | Annapolis MD | 82.0°F | 77.0°F | +5.0° | 48.0 |
| 2026-08-28 12:00 EDT | Boston MA | 79.0°F | 82.0°F | -3.0° | 48.0 |
| 2026-08-28 12:00 EDT | Lansing MI | 71.0°F | 72.0°F | -1.0° | 48.0 |
| 2026-08-28 11:00 CDT | Saint Paul MN | 73.0°F | 77.0°F | -4.0° | 48.0 |
| 2026-08-28 11:00 CDT | Jackson MS | 85.0°F | 90.0°F | -5.0° | 48.0 |
| 2026-08-28 11:00 CDT | Jefferson City MO | 77.0°F | 78.0°F | -1.0° | 48.0 |
| 2026-08-28 10:00 MDT | Helena MT | 66.0°F | 62.0°F | +4.0° | 48.0 |
| 2026-08-28 11:00 CDT | Lincoln NE | 77.0°F | 80.0°F | -3.0° | 48.0 |
| 2026-08-28 09:00 PDT | Carson City NV | 68.0°F | 70.0°F | -2.0° | 48.0 |
| 2026-08-28 12:00 EDT | Concord NH | 78.0°F | 80.0°F | -2.0° | 48.0 |
| 2026-08-28 12:00 EDT | Trenton NJ | 79.0°F | 79.0°F | +0.0° | 48.0 |
| 2026-08-28 10:00 MDT | Santa Fe NM | 73.0°F | 79.0°F | -6.0° | 48.0 |
| 2026-08-28 12:00 EDT | Albany NY | 77.0°F | 75.0°F | +2.0° | 48.0 |
| 2026-08-28 12:00 EDT | Raleigh NC | 82.0°F | 77.0°F | +5.0° | 48.0 |
| 2026-08-28 11:00 CDT | Bismarck ND | 72.0°F | 65.0°F | +7.0° | 48.0 |
| 2026-08-28 12:00 EDT | Columbus OH | 76.0°F | 79.0°F | -3.0° | 48.0 |
| 2026-08-28 11:00 CDT | Oklahoma City OK | 83.0°F | 90.0°F | -7.0° | 48.0 |
| 2026-08-28 09:00 PDT | Salem OR | 61.0°F | 62.0°F | -1.0° | 48.0 |
| 2026-08-28 12:00 EDT | Harrisburg PA | 78.0°F | 76.0°F | +2.0° | 48.0 |
| 2026-08-28 12:00 EDT | Providence RI | 78.0°F | 81.0°F | -3.0° | 48.0 |
| 2026-08-28 12:00 EDT | Columbia SC | 83.0°F | 81.0°F | +2.0° | 48.0 |