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) |
|---|---|---|---|---|
| Providence RI | 180 | 1.68 | 0.23 | 48.0 |
| Honolulu HI | 180 | 1.69 | -1.19 | 48.0 |
| Augusta ME | 180 | 1.71 | -0.24 | 48.0 |
| Austin TX | 180 | 1.77 | 1.03 | 48.0 |
| Little Rock AR | 180 | 1.81 | -0.28 | 48.0 |
| Hartford CT | 180 | 1.82 | 0.13 | 48.0 |
| Jackson MS | 180 | 1.85 | 1.13 | 48.0 |
| Charleston WV | 180 | 1.90 | -0.77 | 48.0 |
| Albany NY | 180 | 1.91 | 0.52 | 48.0 |
| Trenton NJ | 180 | 1.92 | 0.32 | 48.0 |
| Columbus OH | 180 | 1.92 | 0.94 | 48.0 |
| Tallahassee FL | 180 | 1.98 | 0.23 | 48.0 |
| Atlanta GA | 180 | 1.99 | 0.66 | 48.0 |
| Indianapolis IN | 180 | 2.02 | 0.27 | 48.0 |
| Concord NH | 180 | 2.14 | 0.48 | 48.0 |
| Baton Rouge LA | 180 | 2.16 | 1.65 | 48.0 |
| Dover DE | 180 | 2.22 | 0.54 | 48.0 |
| Harrisburg PA | 180 | 2.30 | -0.06 | 48.0 |
| Boston MA | 180 | 2.33 | 1.02 | 48.0 |
| Lansing MI | 180 | 2.37 | 1.18 | 48.0 |
| Annapolis MD | 180 | 2.46 | 1.06 | 48.0 |
| Richmond VA | 180 | 2.48 | 0.50 | 48.0 |
| Jefferson City MO | 180 | 2.49 | 1.06 | 48.0 |
| Helena MT | 180 | 2.52 | 1.50 | 48.0 |
| Salt Lake City UT | 180 | 2.52 | -1.62 | 48.0 |
| Montgomery AL | 180 | 2.57 | 1.11 | 48.0 |
| Nashville TN | 180 | 2.60 | 0.30 | 48.0 |
| Raleigh NC | 180 | 2.61 | 0.78 | 48.0 |
| Juneau AK | 180 | 2.73 | 0.35 | 48.0 |
| Frankfort KY | 180 | 2.81 | 1.94 | 48.0 |
| Saint Paul MN | 180 | 2.83 | 2.43 | 48.0 |
| Montpelier VT | 180 | 2.85 | 0.83 | 48.0 |
| Topeka KS | 180 | 2.87 | 1.26 | 48.0 |
| Carson City NV | 180 | 2.89 | 0.51 | 48.0 |
| Santa Fe NM | 180 | 2.90 | -0.79 | 48.0 |
| Springfield IL | 180 | 2.92 | 2.72 | 48.0 |
| Columbia SC | 180 | 2.96 | -2.24 | 48.0 |
| Sacramento CA | 180 | 3.01 | 0.46 | 48.0 |
| Cheyenne WY | 180 | 3.01 | 0.02 | 48.0 |
| Salem OR | 180 | 3.02 | 1.12 | 48.0 |
| Madison WI | 180 | 3.03 | 2.07 | 48.0 |
| Des Moines IA | 180 | 3.06 | 1.65 | 48.0 |
| Olympia WA | 180 | 3.16 | -1.19 | 48.0 |
| Boise ID | 180 | 3.23 | 2.65 | 48.0 |
| Denver CO | 180 | 3.43 | 0.98 | 48.0 |
| Phoenix AZ | 180 | 3.44 | -0.48 | 48.0 |
| Oklahoma City OK | 180 | 3.47 | 3.05 | 48.0 |
| Lincoln NE | 180 | 3.48 | 2.12 | 48.0 |
| Bismarck ND | 180 | 3.59 | 3.02 | 48.0 |
| Pierre SD | 180 | 5.01 | 4.23 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-07-26 06:00 CDT | Montgomery AL | 76.0°F | 77.0°F | -1.0° | 48.0 |
| 2026-07-26 03:00 AKDT | Juneau AK | 53.0°F | 51.0°F | +2.0° | 48.0 |
| 2026-07-26 04:00 MST | Phoenix AZ | 95.0°F | 93.0°F | +2.0° | 48.0 |
| 2026-07-26 06:00 CDT | Little Rock AR | 78.0°F | 80.0°F | -2.0° | 48.0 |
| 2026-07-26 04:00 PDT | Sacramento CA | 62.0°F | 63.0°F | -1.0° | 48.0 |
| 2026-07-26 05:00 MDT | Denver CO | 73.0°F | 73.0°F | +0.0° | 48.0 |
| 2026-07-26 07:00 EDT | Hartford CT | 61.0°F | 59.0°F | +2.0° | 48.0 |
| 2026-07-26 07:00 EDT | Dover DE | 67.0°F | 63.0°F | +4.0° | 48.0 |
| 2026-07-26 07:00 EDT | Tallahassee FL | 78.0°F | 77.0°F | +1.0° | 48.0 |
| 2026-07-26 07:00 EDT | Atlanta GA | 74.0°F | 73.0°F | +1.0° | 48.0 |
| 2026-07-26 01:00 HST | Honolulu HI | 78.0°F | 77.0°F | +1.0° | 48.0 |
| 2026-07-26 05:00 MDT | Boise ID | 70.0°F | 68.0°F | +2.0° | 48.0 |
| 2026-07-26 06:00 CDT | Springfield IL | 72.0°F | 72.0°F | +0.0° | 48.0 |
| 2026-07-26 07:00 EDT | Indianapolis IN | 71.0°F | 69.0°F | +2.0° | 48.0 |
| 2026-07-26 06:00 CDT | Des Moines IA | 74.0°F | 80.0°F | -6.0° | 48.0 |
| 2026-07-26 06:00 CDT | Topeka KS | 75.0°F | 79.0°F | -4.0° | 48.0 |
| 2026-07-26 07:00 EDT | Frankfort KY | 69.0°F | 69.0°F | +0.0° | 48.0 |
| 2026-07-26 06:00 CDT | Baton Rouge LA | 77.0°F | 77.0°F | +0.0° | 48.0 |
| 2026-07-26 07:00 EDT | Augusta ME | 59.0°F | 57.0°F | +2.0° | 48.0 |
| 2026-07-26 07:00 EDT | Annapolis MD | 71.0°F | 71.0°F | +0.0° | 48.0 |
| 2026-07-26 07:00 EDT | Boston MA | 64.0°F | 61.0°F | +3.0° | 48.0 |
| 2026-07-26 07:00 EDT | Lansing MI | 68.0°F | 70.0°F | -2.0° | 48.0 |
| 2026-07-26 06:00 CDT | Saint Paul MN | 76.0°F | 74.0°F | +2.0° | 48.0 |
| 2026-07-26 06:00 CDT | Jackson MS | 77.0°F | 76.0°F | +1.0° | 48.0 |
| 2026-07-26 06:00 CDT | Jefferson City MO | 75.0°F | 77.0°F | -2.0° | 48.0 |
| 2026-07-26 05:00 MDT | Helena MT | 64.0°F | 66.0°F | -2.0° | 48.0 |
| 2026-07-26 06:00 CDT | Lincoln NE | 75.0°F | 79.0°F | -4.0° | 48.0 |
| 2026-07-26 04:00 PDT | Carson City NV | 63.0°F | 57.0°F | +6.0° | 48.0 |
| 2026-07-26 07:00 EDT | Concord NH | 58.0°F | 53.0°F | +5.0° | 48.0 |
| 2026-07-26 07:00 EDT | Trenton NJ | 64.0°F | 60.0°F | +4.0° | 48.0 |
| 2026-07-26 05:00 MDT | Santa Fe NM | 67.0°F | 67.0°F | +0.0° | 48.0 |
| 2026-07-26 07:00 EDT | Albany NY | 63.0°F | 63.0°F | +0.0° | 48.0 |
| 2026-07-26 07:00 EDT | Raleigh NC | 68.0°F | 67.0°F | +1.0° | 48.0 |
| 2026-07-26 06:00 CDT | Bismarck ND | 73.0°F | 69.0°F | +4.0° | 48.0 |
| 2026-07-26 07:00 EDT | Columbus OH | 68.0°F | 68.0°F | +0.0° | 48.0 |
| 2026-07-26 06:00 CDT | Oklahoma City OK | 81.0°F | 75.0°F | +6.0° | 48.0 |
| 2026-07-26 04:00 PDT | Salem OR | 60.0°F | 62.0°F | -2.0° | 48.0 |
| 2026-07-26 07:00 EDT | Harrisburg PA | 65.0°F | 67.0°F | -2.0° | 48.0 |
| 2026-07-26 07:00 EDT | Providence RI | 61.0°F | 59.0°F | +2.0° | 48.0 |
| 2026-07-26 07:00 EDT | Columbia SC | 73.0°F | 75.0°F | -2.0° | 48.0 |