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) |
|---|---|---|---|---|
| Indianapolis IN | 179 | 1.31 | -0.68 | 48.0 |
| Little Rock AR | 179 | 1.35 | 0.82 | 48.0 |
| Sacramento CA | 179 | 1.58 | 0.36 | 48.0 |
| Jefferson City MO | 179 | 1.64 | 0.92 | 48.0 |
| Nashville TN | 179 | 1.64 | 1.04 | 48.0 |
| Honolulu HI | 179 | 1.75 | -1.36 | 48.0 |
| Des Moines IA | 179 | 1.75 | 0.52 | 48.0 |
| Raleigh NC | 179 | 1.75 | 0.60 | 48.0 |
| Salem OR | 179 | 1.85 | 1.04 | 48.0 |
| Austin TX | 179 | 1.99 | -0.21 | 48.0 |
| Columbus OH | 179 | 2.03 | 0.38 | 48.0 |
| Columbia SC | 179 | 2.09 | 0.25 | 48.0 |
| Albany NY | 179 | 2.27 | 0.56 | 48.0 |
| Baton Rouge LA | 179 | 2.28 | 1.02 | 48.0 |
| Jackson MS | 179 | 2.28 | 1.41 | 48.0 |
| Augusta ME | 179 | 2.32 | 0.29 | 48.0 |
| Boston MA | 179 | 2.37 | 0.82 | 48.0 |
| Springfield IL | 179 | 2.46 | 2.27 | 48.0 |
| Frankfort KY | 179 | 2.47 | 1.78 | 48.0 |
| Saint Paul MN | 179 | 2.47 | 0.52 | 48.0 |
| Topeka KS | 179 | 2.50 | 1.55 | 48.0 |
| Charleston WV | 179 | 2.58 | 2.32 | 48.0 |
| Concord NH | 179 | 2.61 | -0.83 | 48.0 |
| Dover DE | 179 | 2.62 | 0.45 | 48.0 |
| Atlanta GA | 179 | 2.62 | 1.41 | 48.0 |
| Cheyenne WY | 179 | 2.63 | -1.04 | 48.0 |
| Hartford CT | 179 | 2.72 | 0.17 | 48.0 |
| Lansing MI | 179 | 2.73 | 1.71 | 48.0 |
| Providence RI | 179 | 2.76 | -0.51 | 48.0 |
| Annapolis MD | 179 | 2.82 | 1.34 | 48.0 |
| Madison WI | 179 | 2.82 | 2.19 | 48.0 |
| Richmond VA | 179 | 2.83 | 1.44 | 48.0 |
| Oklahoma City OK | 179 | 2.91 | 1.98 | 48.0 |
| Trenton NJ | 179 | 2.92 | 0.33 | 48.0 |
| Tallahassee FL | 179 | 2.96 | -1.88 | 48.0 |
| Montpelier VT | 179 | 2.97 | 0.51 | 48.0 |
| Harrisburg PA | 179 | 2.99 | 0.96 | 48.0 |
| Olympia WA | 179 | 3.04 | -0.28 | 48.0 |
| Juneau AK | 179 | 3.07 | 0.09 | 48.0 |
| Lincoln NE | 179 | 3.09 | 2.67 | 48.0 |
| Helena MT | 179 | 3.12 | -0.80 | 48.0 |
| Carson City NV | 179 | 3.16 | -2.32 | 48.0 |
| Denver CO | 179 | 3.27 | 0.01 | 48.0 |
| Bismarck ND | 179 | 3.29 | 1.26 | 48.0 |
| Montgomery AL | 179 | 3.44 | -0.30 | 48.0 |
| Santa Fe NM | 179 | 3.45 | -1.30 | 48.0 |
| Boise ID | 179 | 3.71 | 1.18 | 48.0 |
| Phoenix AZ | 179 | 3.76 | -2.11 | 48.0 |
| Pierre SD | 179 | 3.89 | 1.77 | 48.0 |
| Salt Lake City UT | 179 | 4.31 | -3.64 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-09-07 05:00 CDT | Montgomery AL | 76.0°F | 75.0°F | +1.0° | 48.0 |
| 2026-09-07 02:00 AKDT | Juneau AK | 52.0°F | 53.0°F | -1.0° | 48.0 |
| 2026-09-07 03:00 MST | Phoenix AZ | 87.0°F | 92.0°F | -5.0° | 48.0 |
| 2026-09-07 05:00 CDT | Little Rock AR | 77.0°F | 78.0°F | -1.0° | 48.0 |
| 2026-09-07 03:00 PDT | Sacramento CA | 57.0°F | 58.0°F | -1.0° | 48.0 |
| 2026-09-07 04:00 MDT | Denver CO | 67.0°F | 66.0°F | +1.0° | 48.0 |
| 2026-09-07 06:00 EDT | Hartford CT | 54.0°F | 52.0°F | +2.0° | 48.0 |
| 2026-09-07 06:00 EDT | Dover DE | 63.0°F | 65.0°F | -2.0° | 48.0 |
| 2026-09-07 06:00 EDT | Tallahassee FL | 76.0°F | 73.0°F | +3.0° | 48.0 |
| 2026-09-07 06:00 EDT | Atlanta GA | 74.0°F | 73.0°F | +1.0° | 48.0 |
| 2026-09-07 00:00 HST | Honolulu HI | 78.0°F | 79.0°F | -1.0° | 48.0 |
| 2026-09-07 04:00 MDT | Boise ID | 56.0°F | 53.0°F | +3.0° | 48.0 |
| 2026-09-07 05:00 CDT | Springfield IL | 65.0°F | 59.0°F | +6.0° | 48.0 |
| 2026-09-07 06:00 EDT | Indianapolis IN | 63.0°F | 63.0°F | +0.0° | 48.0 |
| 2026-09-07 05:00 CDT | Des Moines IA | 70.0°F | 71.0°F | -1.0° | 48.0 |
| 2026-09-07 05:00 CDT | Topeka KS | 75.0°F | 73.0°F | +2.0° | 48.0 |
| 2026-09-07 06:00 EDT | Frankfort KY | 63.0°F | 60.0°F | +3.0° | 48.0 |
| 2026-09-07 05:00 CDT | Baton Rouge LA | 78.0°F | 79.0°F | -1.0° | 48.0 |
| 2026-09-07 06:00 EDT | Augusta ME | 52.0°F | 53.0°F | -1.0° | 48.0 |
| 2026-09-07 06:00 EDT | Annapolis MD | 66.0°F | 68.0°F | -2.0° | 48.0 |
| 2026-09-07 06:00 EDT | Boston MA | 57.0°F | 59.0°F | -2.0° | 48.0 |
| 2026-09-07 06:00 EDT | Lansing MI | 58.0°F | 52.0°F | +6.0° | 48.0 |
| 2026-09-07 05:00 CDT | Saint Paul MN | 68.0°F | 69.0°F | -1.0° | 48.0 |
| 2026-09-07 05:00 CDT | Jackson MS | 76.0°F | 74.0°F | +2.0° | 48.0 |
| 2026-09-07 05:00 CDT | Jefferson City MO | 69.0°F | 73.0°F | -4.0° | 48.0 |
| 2026-09-07 04:00 MDT | Helena MT | 57.0°F | 58.0°F | -1.0° | 48.0 |
| 2026-09-07 05:00 CDT | Lincoln NE | 75.0°F | 71.0°F | +4.0° | 48.0 |
| 2026-09-07 03:00 PDT | Carson City NV | 48.0°F | 50.0°F | -2.0° | 48.0 |
| 2026-09-07 06:00 EDT | Concord NH | 52.0°F | 46.0°F | +6.0° | 48.0 |
| 2026-09-07 06:00 EDT | Trenton NJ | 58.0°F | 60.0°F | -2.0° | 48.0 |
| 2026-09-07 04:00 MDT | Santa Fe NM | 64.0°F | 70.0°F | -6.0° | 48.0 |
| 2026-09-07 06:00 EDT | Albany NY | 53.0°F | 50.0°F | +3.0° | 48.0 |
| 2026-09-07 06:00 EDT | Raleigh NC | 69.0°F | 65.0°F | +4.0° | 48.0 |
| 2026-09-07 05:00 CDT | Bismarck ND | 70.0°F | 66.0°F | +4.0° | 48.0 |
| 2026-09-07 06:00 EDT | Columbus OH | 63.0°F | 62.0°F | +1.0° | 48.0 |
| 2026-09-07 05:00 CDT | Oklahoma City OK | 80.0°F | 77.0°F | +3.0° | 48.0 |
| 2026-09-07 03:00 PDT | Salem OR | 56.0°F | 53.0°F | +3.0° | 48.0 |
| 2026-09-07 06:00 EDT | Harrisburg PA | 59.0°F | 56.0°F | +3.0° | 48.0 |
| 2026-09-07 06:00 EDT | Providence RI | 54.0°F | 55.0°F | -1.0° | 48.0 |
| 2026-09-07 06:00 EDT | Columbia SC | 73.0°F | 72.0°F | +1.0° | 48.0 |