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 | 180 | 1.54 | 0.74 | 48.0 |
| Little Rock AR | 180 | 1.68 | 0.77 | 48.0 |
| Richmond VA | 180 | 1.72 | -0.32 | 48.0 |
| Tallahassee FL | 180 | 1.73 | -0.43 | 48.0 |
| Charleston WV | 180 | 1.77 | 0.93 | 48.0 |
| Indianapolis IN | 180 | 1.79 | -0.23 | 48.0 |
| Montgomery AL | 180 | 1.89 | -0.36 | 48.0 |
| Trenton NJ | 180 | 1.92 | -0.87 | 48.0 |
| Honolulu HI | 180 | 1.98 | -1.77 | 48.0 |
| Jackson MS | 180 | 2.00 | 0.44 | 48.0 |
| Frankfort KY | 180 | 2.03 | -0.11 | 48.0 |
| Augusta ME | 180 | 2.04 | 0.18 | 48.0 |
| Columbia SC | 180 | 2.18 | -0.66 | 48.0 |
| Providence RI | 180 | 2.24 | -1.36 | 48.0 |
| Nashville TN | 180 | 2.25 | 0.86 | 48.0 |
| Boston MA | 180 | 2.26 | -0.84 | 48.0 |
| Salem OR | 180 | 2.28 | 1.08 | 48.0 |
| Concord NH | 180 | 2.31 | -0.65 | 48.0 |
| Annapolis MD | 180 | 2.34 | -1.21 | 48.0 |
| Jefferson City MO | 180 | 2.34 | 0.05 | 48.0 |
| Sacramento CA | 180 | 2.37 | 1.98 | 48.0 |
| Baton Rouge LA | 180 | 2.38 | 0.71 | 48.0 |
| Albany NY | 180 | 2.38 | -0.12 | 48.0 |
| Dover DE | 180 | 2.39 | -1.54 | 48.0 |
| Saint Paul MN | 180 | 2.46 | 0.14 | 48.0 |
| Columbus OH | 180 | 2.48 | 0.89 | 48.0 |
| Harrisburg PA | 180 | 2.49 | -1.38 | 48.0 |
| Atlanta GA | 180 | 2.53 | 1.45 | 48.0 |
| Hartford CT | 180 | 2.56 | -0.04 | 48.0 |
| Raleigh NC | 180 | 2.57 | -1.67 | 48.0 |
| Boise ID | 180 | 2.64 | -1.63 | 48.0 |
| Santa Fe NM | 180 | 2.72 | 0.39 | 48.0 |
| Des Moines IA | 180 | 2.76 | 2.01 | 48.0 |
| Helena MT | 180 | 2.78 | -0.66 | 48.0 |
| Bismarck ND | 180 | 2.87 | -0.57 | 48.0 |
| Oklahoma City OK | 180 | 2.95 | 0.59 | 48.0 |
| Lansing MI | 180 | 3.03 | 1.49 | 48.0 |
| Phoenix AZ | 180 | 3.04 | 0.08 | 48.0 |
| Madison WI | 180 | 3.07 | 1.78 | 48.0 |
| Cheyenne WY | 180 | 3.09 | -0.51 | 48.0 |
| Olympia WA | 180 | 3.13 | 1.87 | 48.0 |
| Pierre SD | 180 | 3.19 | 1.77 | 48.0 |
| Springfield IL | 180 | 3.24 | 1.77 | 48.0 |
| Montpelier VT | 180 | 3.30 | 0.93 | 48.0 |
| Carson City NV | 180 | 3.41 | -0.01 | 48.0 |
| Denver CO | 180 | 3.62 | -0.24 | 48.0 |
| Juneau AK | 180 | 4.01 | 2.04 | 48.0 |
| Salt Lake City UT | 180 | 4.10 | -1.60 | 48.0 |
| Topeka KS | 180 | 4.32 | 0.33 | 48.0 |
| Lincoln NE | 180 | 4.62 | 3.51 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-09-19 06:00 CDT | Montgomery AL | 73.0°F | 72.0°F | +1.0° | 48.0 |
| 2026-09-19 03:00 AKDT | Juneau AK | 50.0°F | 54.0°F | -4.0° | 48.0 |
| 2026-09-19 04:00 MST | Phoenix AZ | 80.0°F | 82.0°F | -2.0° | 48.0 |
| 2026-09-19 06:00 CDT | Little Rock AR | 75.0°F | 75.0°F | +0.0° | 48.0 |
| 2026-09-19 04:00 PDT | Sacramento CA | 59.0°F | 60.0°F | -1.0° | 48.0 |
| 2026-09-19 05:00 MDT | Denver CO | 56.0°F | 56.0°F | +0.0° | 48.0 |
| 2026-09-19 07:00 EDT | Hartford CT | 52.0°F | 57.0°F | -5.0° | 48.0 |
| 2026-09-19 07:00 EDT | Dover DE | 65.0°F | 67.0°F | -2.0° | 48.0 |
| 2026-09-19 07:00 EDT | Tallahassee FL | 72.0°F | 71.0°F | +1.0° | 48.0 |
| 2026-09-19 07:00 EDT | Atlanta GA | 74.0°F | 74.0°F | +0.0° | 48.0 |
| 2026-09-19 01:00 HST | Honolulu HI | 78.0°F | 80.0°F | -2.0° | 48.0 |
| 2026-09-19 05:00 MDT | Boise ID | 54.0°F | 56.0°F | -2.0° | 48.0 |
| 2026-09-19 06:00 CDT | Springfield IL | 72.0°F | 73.0°F | -1.0° | 48.0 |
| 2026-09-19 07:00 EDT | Indianapolis IN | 67.0°F | 70.0°F | -3.0° | 48.0 |
| 2026-09-19 06:00 CDT | Des Moines IA | 72.0°F | 73.0°F | -1.0° | 48.0 |
| 2026-09-19 06:00 CDT | Topeka KS | 74.0°F | 73.0°F | +1.0° | 48.0 |
| 2026-09-19 07:00 EDT | Frankfort KY | 68.0°F | 69.0°F | -1.0° | 48.0 |
| 2026-09-19 06:00 CDT | Baton Rouge LA | 73.0°F | 69.0°F | +4.0° | 48.0 |
| 2026-09-19 07:00 EDT | Augusta ME | 46.0°F | 45.0°F | +1.0° | 48.0 |
| 2026-09-19 07:00 EDT | Annapolis MD | 68.0°F | 69.0°F | -1.0° | 48.0 |
| 2026-09-19 07:00 EDT | Boston MA | 54.0°F | 55.0°F | -1.0° | 48.0 |
| 2026-09-19 07:00 EDT | Lansing MI | 56.0°F | 55.0°F | +1.0° | 48.0 |
| 2026-09-19 06:00 CDT | Saint Paul MN | 60.0°F | 58.0°F | +2.0° | 48.0 |
| 2026-09-19 06:00 CDT | Jackson MS | 74.0°F | 72.0°F | +2.0° | 48.0 |
| 2026-09-19 06:00 CDT | Jefferson City MO | 74.0°F | 76.0°F | -2.0° | 48.0 |
| 2026-09-19 05:00 MDT | Helena MT | 55.0°F | 56.0°F | -1.0° | 48.0 |
| 2026-09-19 06:00 CDT | Lincoln NE | 72.0°F | 72.0°F | +0.0° | 48.0 |
| 2026-09-19 04:00 PDT | Carson City NV | 50.0°F | 46.0°F | +4.0° | 48.0 |
| 2026-09-19 07:00 EDT | Concord NH | 46.0°F | 43.0°F | +3.0° | 48.0 |
| 2026-09-19 07:00 EDT | Trenton NJ | 60.0°F | 62.0°F | -2.0° | 48.0 |
| 2026-09-19 05:00 MDT | Santa Fe NM | 55.0°F | 54.0°F | +1.0° | 48.0 |
| 2026-09-19 07:00 EDT | Albany NY | 49.0°F | 48.0°F | +1.0° | 48.0 |
| 2026-09-19 07:00 EDT | Raleigh NC | 71.0°F | 72.0°F | -1.0° | 48.0 |
| 2026-09-19 06:00 CDT | Bismarck ND | 55.0°F | 58.0°F | -3.0° | 48.0 |
| 2026-09-19 07:00 EDT | Columbus OH | 62.0°F | 63.0°F | -1.0° | 48.0 |
| 2026-09-19 06:00 CDT | Oklahoma City OK | 79.0°F | 75.0°F | +4.0° | 48.0 |
| 2026-09-19 04:00 PDT | Salem OR | 54.0°F | 48.0°F | +6.0° | 48.0 |
| 2026-09-19 07:00 EDT | Harrisburg PA | 59.0°F | 62.0°F | -3.0° | 48.0 |
| 2026-09-19 07:00 EDT | Providence RI | 53.0°F | 58.0°F | -5.0° | 48.0 |
| 2026-09-19 07:00 EDT | Columbia SC | 73.0°F | 73.0°F | +0.0° | 48.0 |