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) |
|---|---|---|---|---|
| Austin TX | 183 | 1.55 | 0.68 | 48.0 |
| Richmond VA | 183 | 1.58 | -0.16 | 48.0 |
| Trenton NJ | 183 | 1.70 | -0.62 | 48.0 |
| Albany NY | 183 | 1.84 | -0.16 | 48.0 |
| Indianapolis IN | 183 | 1.89 | -0.25 | 48.0 |
| Honolulu HI | 183 | 1.96 | -1.45 | 48.0 |
| Charleston WV | 183 | 2.04 | 1.16 | 48.0 |
| Salem OR | 183 | 2.05 | -0.22 | 48.0 |
| Providence RI | 183 | 2.05 | -1.04 | 48.0 |
| Columbia SC | 183 | 2.19 | -1.02 | 48.0 |
| Sacramento CA | 183 | 2.22 | 0.92 | 48.0 |
| Raleigh NC | 183 | 2.23 | -1.55 | 48.0 |
| Little Rock AR | 183 | 2.25 | 0.79 | 48.0 |
| Jackson MS | 183 | 2.25 | 0.89 | 48.0 |
| Columbus OH | 183 | 2.25 | 0.34 | 48.0 |
| Annapolis MD | 183 | 2.26 | -1.17 | 48.0 |
| Saint Paul MN | 183 | 2.27 | -0.78 | 48.0 |
| Nashville TN | 183 | 2.30 | -0.23 | 48.0 |
| Phoenix AZ | 183 | 2.31 | -1.41 | 48.0 |
| Augusta ME | 183 | 2.31 | 0.78 | 48.0 |
| Boston MA | 183 | 2.31 | -0.14 | 48.0 |
| Hartford CT | 183 | 2.33 | 0.21 | 48.0 |
| Frankfort KY | 183 | 2.33 | -0.28 | 48.0 |
| Concord NH | 183 | 2.40 | 0.48 | 48.0 |
| Montgomery AL | 183 | 2.42 | -0.30 | 48.0 |
| Boise ID | 183 | 2.42 | -1.80 | 48.0 |
| Jefferson City MO | 183 | 2.43 | 0.33 | 48.0 |
| Dover DE | 183 | 2.45 | -1.54 | 48.0 |
| Lansing MI | 183 | 2.48 | 0.66 | 48.0 |
| Harrisburg PA | 183 | 2.48 | -1.74 | 48.0 |
| Tallahassee FL | 183 | 2.57 | 0.30 | 48.0 |
| Baton Rouge LA | 183 | 2.58 | 0.74 | 48.0 |
| Pierre SD | 183 | 2.61 | 1.09 | 48.0 |
| Madison WI | 183 | 2.61 | 0.46 | 48.0 |
| Des Moines IA | 183 | 2.63 | 1.85 | 48.0 |
| Bismarck ND | 183 | 2.66 | -0.39 | 48.0 |
| Atlanta GA | 183 | 2.69 | 1.19 | 48.0 |
| Cheyenne WY | 183 | 2.78 | 0.43 | 48.0 |
| Oklahoma City OK | 183 | 2.80 | 0.51 | 48.0 |
| Olympia WA | 183 | 2.82 | 1.43 | 48.0 |
| Santa Fe NM | 183 | 2.83 | -0.56 | 48.0 |
| Helena MT | 183 | 2.86 | -0.49 | 48.0 |
| Salt Lake City UT | 183 | 2.93 | -0.48 | 48.0 |
| Montpelier VT | 183 | 3.68 | 1.73 | 48.0 |
| Springfield IL | 183 | 3.70 | 2.43 | 48.0 |
| Carson City NV | 183 | 3.76 | -0.31 | 48.0 |
| Denver CO | 183 | 3.87 | 0.84 | 48.0 |
| Lincoln NE | 183 | 4.11 | 3.10 | 48.0 |
| Topeka KS | 183 | 4.21 | 1.89 | 48.0 |
| Juneau AK | 183 | 5.09 | 2.35 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-09-16 09:00 CDT | Montgomery AL | 80.0°F | 82.0°F | -2.0° | 48.0 |
| 2026-09-16 06:00 AKDT | Juneau AK | 52.0°F | 52.0°F | +0.0° | 48.0 |
| 2026-09-16 07:00 MST | Phoenix AZ | 83.0°F | 86.0°F | -3.0° | 48.0 |
| 2026-09-16 09:00 CDT | Little Rock AR | 84.0°F | 83.0°F | +1.0° | 48.0 |
| 2026-09-16 07:00 PDT | Sacramento CA | 60.0°F | 58.0°F | +2.0° | 48.0 |
| 2026-09-16 08:00 MDT | Denver CO | 60.0°F | 57.0°F | +3.0° | 48.0 |
| 2026-09-16 10:00 EDT | Hartford CT | 68.0°F | 66.0°F | +2.0° | 48.0 |
| 2026-09-16 10:00 EDT | Dover DE | 71.0°F | 74.0°F | -3.0° | 48.0 |
| 2026-09-16 10:00 EDT | Tallahassee FL | 79.0°F | 82.0°F | -3.0° | 48.0 |
| 2026-09-16 10:00 EDT | Atlanta GA | 78.0°F | 77.0°F | +1.0° | 48.0 |
| 2026-09-16 04:00 HST | Honolulu HI | 77.0°F | 77.0°F | +0.0° | 48.0 |
| 2026-09-16 08:00 MDT | Boise ID | 52.0°F | 53.0°F | -1.0° | 48.0 |
| 2026-09-16 09:00 CDT | Springfield IL | 76.0°F | 73.0°F | +3.0° | 48.0 |
| 2026-09-16 10:00 EDT | Indianapolis IN | 78.0°F | 81.0°F | -3.0° | 48.0 |
| 2026-09-16 09:00 CDT | Des Moines IA | 62.0°F | 63.0°F | -1.0° | 48.0 |
| 2026-09-16 09:00 CDT | Topeka KS | 72.0°F | 72.0°F | +0.0° | 48.0 |
| 2026-09-16 10:00 EDT | Frankfort KY | 81.0°F | 80.0°F | +1.0° | 48.0 |
| 2026-09-16 09:00 CDT | Baton Rouge LA | 83.0°F | 85.0°F | -2.0° | 48.0 |
| 2026-09-16 10:00 EDT | Augusta ME | 62.0°F | 59.0°F | +3.0° | 48.0 |
| 2026-09-16 10:00 EDT | Annapolis MD | 73.0°F | 73.0°F | +0.0° | 48.0 |
| 2026-09-16 10:00 EDT | Boston MA | 67.0°F | 68.0°F | -1.0° | 48.0 |
| 2026-09-16 10:00 EDT | Lansing MI | 64.0°F | 64.0°F | +0.0° | 48.0 |
| 2026-09-16 09:00 CDT | Saint Paul MN | 57.0°F | 60.0°F | -3.0° | 48.0 |
| 2026-09-16 09:00 CDT | Jackson MS | 83.0°F | 83.0°F | +0.0° | 48.0 |
| 2026-09-16 09:00 CDT | Jefferson City MO | 78.0°F | 74.0°F | +4.0° | 48.0 |
| 2026-09-16 08:00 MDT | Helena MT | 49.0°F | 49.0°F | +0.0° | 48.0 |
| 2026-09-16 09:00 CDT | Lincoln NE | 65.0°F | 59.0°F | +6.0° | 48.0 |
| 2026-09-16 07:00 PDT | Carson City NV | 52.0°F | 45.0°F | +7.0° | 48.0 |
| 2026-09-16 10:00 EDT | Concord NH | 65.0°F | 67.0°F | -2.0° | 48.0 |
| 2026-09-16 10:00 EDT | Trenton NJ | 68.0°F | 66.0°F | +2.0° | 48.0 |
| 2026-09-16 08:00 MDT | Santa Fe NM | 60.0°F | 59.0°F | +1.0° | 48.0 |
| 2026-09-16 10:00 EDT | Albany NY | 65.0°F | 64.0°F | +1.0° | 48.0 |
| 2026-09-16 10:00 EDT | Raleigh NC | 72.0°F | 73.0°F | -1.0° | 48.0 |
| 2026-09-16 09:00 CDT | Bismarck ND | 54.0°F | 49.0°F | +5.0° | 48.0 |
| 2026-09-16 10:00 EDT | Columbus OH | 76.0°F | 79.0°F | -3.0° | 48.0 |
| 2026-09-16 09:00 CDT | Oklahoma City OK | 83.0°F | 82.0°F | +1.0° | 48.0 |
| 2026-09-16 07:00 PDT | Salem OR | 55.0°F | 52.0°F | +3.0° | 48.0 |
| 2026-09-16 10:00 EDT | Harrisburg PA | 68.0°F | 68.0°F | +0.0° | 48.0 |
| 2026-09-16 10:00 EDT | Providence RI | 66.0°F | 68.0°F | -2.0° | 48.0 |
| 2026-09-16 10:00 EDT | Columbia SC | 76.0°F | 77.0°F | -1.0° | 48.0 |