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 | 180 | 1.46 | -0.74 | 48.0 |
| Honolulu HI | 180 | 1.66 | -1.44 | 48.0 |
| Salem OR | 180 | 1.67 | 0.78 | 48.0 |
| Nashville TN | 180 | 1.82 | 0.06 | 48.0 |
| Lansing MI | 180 | 1.88 | 0.36 | 48.0 |
| Little Rock AR | 180 | 2.02 | -0.45 | 48.0 |
| Charleston WV | 180 | 2.03 | 1.43 | 48.0 |
| Raleigh NC | 180 | 2.07 | -0.52 | 48.0 |
| Columbus OH | 180 | 2.09 | -0.06 | 48.0 |
| Baton Rouge LA | 180 | 2.10 | 1.49 | 48.0 |
| Sacramento CA | 180 | 2.18 | 1.65 | 48.0 |
| Boston MA | 180 | 2.18 | 0.20 | 48.0 |
| Jefferson City MO | 180 | 2.19 | 1.28 | 48.0 |
| Trenton NJ | 180 | 2.23 | -1.04 | 48.0 |
| Oklahoma City OK | 180 | 2.30 | 1.10 | 48.0 |
| Austin TX | 180 | 2.31 | 2.18 | 48.0 |
| Atlanta GA | 180 | 2.33 | 0.51 | 48.0 |
| Topeka KS | 180 | 2.33 | 1.20 | 48.0 |
| Providence RI | 180 | 2.33 | -0.59 | 48.0 |
| Saint Paul MN | 180 | 2.34 | 0.05 | 48.0 |
| Dover DE | 180 | 2.35 | -1.04 | 48.0 |
| Augusta ME | 180 | 2.36 | -1.46 | 48.0 |
| Annapolis MD | 180 | 2.36 | 0.44 | 48.0 |
| Jackson MS | 180 | 2.37 | 1.18 | 48.0 |
| Indianapolis IN | 180 | 2.39 | 0.21 | 48.0 |
| Carson City NV | 180 | 2.44 | 1.69 | 48.0 |
| Des Moines IA | 180 | 2.46 | -0.20 | 48.0 |
| Juneau AK | 180 | 2.50 | 0.92 | 48.0 |
| Harrisburg PA | 180 | 2.50 | -0.39 | 48.0 |
| Helena MT | 180 | 2.51 | 0.13 | 48.0 |
| Montpelier VT | 180 | 2.52 | 1.03 | 48.0 |
| Frankfort KY | 180 | 2.59 | 1.93 | 48.0 |
| Lincoln NE | 180 | 2.62 | 1.74 | 48.0 |
| Springfield IL | 180 | 2.64 | 2.13 | 48.0 |
| Madison WI | 180 | 2.69 | 1.29 | 48.0 |
| Phoenix AZ | 180 | 2.78 | -1.29 | 48.0 |
| Hartford CT | 180 | 2.80 | -1.60 | 48.0 |
| Columbia SC | 180 | 2.81 | 0.32 | 48.0 |
| Boise ID | 180 | 2.85 | -0.28 | 48.0 |
| Albany NY | 180 | 2.88 | -0.29 | 48.0 |
| Salt Lake City UT | 180 | 2.89 | 1.65 | 48.0 |
| Montgomery AL | 180 | 2.92 | -0.99 | 48.0 |
| Olympia WA | 180 | 2.96 | -0.53 | 48.0 |
| Cheyenne WY | 180 | 2.98 | 0.35 | 48.0 |
| Denver CO | 180 | 2.99 | 1.32 | 48.0 |
| Tallahassee FL | 180 | 3.08 | 0.30 | 48.0 |
| Pierre SD | 180 | 3.12 | 1.71 | 48.0 |
| Santa Fe NM | 180 | 3.24 | -1.26 | 48.0 |
| Bismarck ND | 180 | 3.32 | 0.67 | 48.0 |
| Concord NH | 180 | 3.39 | -2.06 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-08-04 06:00 CDT | Montgomery AL | 73.0°F | 73.0°F | +0.0° | 48.0 |
| 2026-08-04 03:00 AKDT | Juneau AK | 53.0°F | 55.0°F | -2.0° | 48.0 |
| 2026-08-04 04:00 MST | Phoenix AZ | 92.0°F | 90.0°F | +2.0° | 48.0 |
| 2026-08-04 06:00 CDT | Little Rock AR | 72.0°F | 72.0°F | +0.0° | 48.0 |
| 2026-08-04 04:00 PDT | Sacramento CA | 67.0°F | 68.0°F | -1.0° | 48.0 |
| 2026-08-04 05:00 MDT | Denver CO | 67.0°F | 62.0°F | +5.0° | 48.0 |
| 2026-08-04 07:00 EDT | Hartford CT | 69.0°F | 63.0°F | +6.0° | 48.0 |
| 2026-08-04 07:00 EDT | Dover DE | 72.0°F | 72.0°F | +0.0° | 48.0 |
| 2026-08-04 07:00 EDT | Tallahassee FL | 75.0°F | 73.0°F | +2.0° | 48.0 |
| 2026-08-04 07:00 EDT | Atlanta GA | 72.0°F | 72.0°F | +0.0° | 48.0 |
| 2026-08-04 01:00 HST | Honolulu HI | 78.0°F | 77.0°F | +1.0° | 48.0 |
| 2026-08-04 05:00 MDT | Boise ID | 58.0°F | 55.0°F | +3.0° | 48.0 |
| 2026-08-04 06:00 CDT | Springfield IL | 64.0°F | 63.0°F | +1.0° | 48.0 |
| 2026-08-04 07:00 EDT | Indianapolis IN | 63.0°F | 65.0°F | -2.0° | 48.0 |
| 2026-08-04 06:00 CDT | Des Moines IA | 67.0°F | 68.0°F | -1.0° | 48.0 |
| 2026-08-04 06:00 CDT | Topeka KS | 69.0°F | 68.0°F | +1.0° | 48.0 |
| 2026-08-04 07:00 EDT | Frankfort KY | 66.0°F | 62.0°F | +4.0° | 48.0 |
| 2026-08-04 06:00 CDT | Baton Rouge LA | 77.0°F | 73.0°F | +4.0° | 48.0 |
| 2026-08-04 07:00 EDT | Augusta ME | 66.0°F | 62.0°F | +4.0° | 48.0 |
| 2026-08-04 07:00 EDT | Annapolis MD | 73.0°F | 74.0°F | -1.0° | 48.0 |
| 2026-08-04 07:00 EDT | Boston MA | 71.0°F | 69.0°F | +2.0° | 48.0 |
| 2026-08-04 07:00 EDT | Lansing MI | 59.0°F | 60.0°F | -1.0° | 48.0 |
| 2026-08-04 06:00 CDT | Saint Paul MN | 68.0°F | 63.0°F | +5.0° | 48.0 |
| 2026-08-04 06:00 CDT | Jackson MS | 72.0°F | 69.0°F | +3.0° | 48.0 |
| 2026-08-04 06:00 CDT | Jefferson City MO | 66.0°F | 67.0°F | -1.0° | 48.0 |
| 2026-08-04 05:00 MDT | Helena MT | 50.0°F | 46.0°F | +4.0° | 48.0 |
| 2026-08-04 06:00 CDT | Lincoln NE | 72.0°F | 71.0°F | +1.0° | 48.0 |
| 2026-08-04 04:00 PDT | Carson City NV | 64.0°F | 59.0°F | +5.0° | 48.0 |
| 2026-08-04 07:00 EDT | Concord NH | 64.0°F | 60.0°F | +4.0° | 48.0 |
| 2026-08-04 07:00 EDT | Trenton NJ | 70.0°F | 64.0°F | +6.0° | 48.0 |
| 2026-08-04 05:00 MDT | Santa Fe NM | 68.0°F | 64.0°F | +4.0° | 48.0 |
| 2026-08-04 07:00 EDT | Albany NY | 65.0°F | 63.0°F | +2.0° | 48.0 |
| 2026-08-04 07:00 EDT | Raleigh NC | 72.0°F | 74.0°F | -2.0° | 48.0 |
| 2026-08-04 06:00 CDT | Bismarck ND | 53.0°F | 49.0°F | +4.0° | 48.0 |
| 2026-08-04 07:00 EDT | Columbus OH | 64.0°F | 62.0°F | +2.0° | 48.0 |
| 2026-08-04 06:00 CDT | Oklahoma City OK | 75.0°F | 73.0°F | +2.0° | 48.0 |
| 2026-08-04 04:00 PDT | Salem OR | 62.0°F | 55.0°F | +7.0° | 48.0 |
| 2026-08-04 07:00 EDT | Harrisburg PA | 68.0°F | 63.0°F | +5.0° | 48.0 |
| 2026-08-04 07:00 EDT | Providence RI | 70.0°F | 65.0°F | +5.0° | 48.0 |
| 2026-08-04 07:00 EDT | Columbia SC | 74.0°F | 76.0°F | -2.0° | 48.0 |