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 | 182 | 1.51 | -0.03 | 48.0 |
| Honolulu HI | 182 | 1.53 | -0.97 | 48.0 |
| Augusta ME | 182 | 1.63 | -0.36 | 48.0 |
| Hartford CT | 182 | 1.73 | 0.07 | 48.0 |
| Little Rock AR | 182 | 1.88 | -0.38 | 48.0 |
| Jackson MS | 182 | 1.88 | 1.05 | 48.0 |
| Charleston WV | 182 | 1.94 | -0.45 | 48.0 |
| Tallahassee FL | 182 | 1.95 | -0.17 | 48.0 |
| Austin TX | 182 | 1.96 | 1.37 | 48.0 |
| Trenton NJ | 182 | 1.98 | 0.06 | 48.0 |
| Concord NH | 182 | 2.01 | 0.65 | 48.0 |
| Baton Rouge LA | 182 | 2.04 | 1.51 | 48.0 |
| Atlanta GA | 182 | 2.08 | 0.29 | 48.0 |
| Albany NY | 182 | 2.10 | 0.38 | 48.0 |
| Harrisburg PA | 182 | 2.17 | -0.34 | 48.0 |
| Indianapolis IN | 182 | 2.21 | 0.59 | 48.0 |
| Lansing MI | 182 | 2.26 | 0.83 | 48.0 |
| Columbus OH | 182 | 2.30 | 1.33 | 48.0 |
| Boston MA | 182 | 2.32 | 1.09 | 48.0 |
| Dover DE | 182 | 2.34 | 0.51 | 48.0 |
| Richmond VA | 182 | 2.37 | 0.37 | 48.0 |
| Jefferson City MO | 182 | 2.43 | 0.72 | 48.0 |
| Annapolis MD | 182 | 2.51 | 1.02 | 48.0 |
| Montgomery AL | 182 | 2.54 | 1.01 | 48.0 |
| Helena MT | 182 | 2.54 | 1.11 | 48.0 |
| Nashville TN | 182 | 2.54 | 0.48 | 48.0 |
| Raleigh NC | 182 | 2.60 | 0.69 | 48.0 |
| Springfield IL | 182 | 2.71 | 2.24 | 48.0 |
| Juneau AK | 182 | 2.73 | 0.70 | 48.0 |
| Carson City NV | 182 | 2.77 | 1.01 | 48.0 |
| Topeka KS | 182 | 2.78 | 0.68 | 48.0 |
| Columbia SC | 182 | 2.80 | -1.96 | 48.0 |
| Salt Lake City UT | 182 | 2.88 | -2.02 | 48.0 |
| Saint Paul MN | 182 | 2.91 | 2.07 | 48.0 |
| Santa Fe NM | 182 | 2.96 | -1.05 | 48.0 |
| Cheyenne WY | 182 | 2.96 | -0.40 | 48.0 |
| Sacramento CA | 182 | 3.04 | 0.70 | 48.0 |
| Des Moines IA | 182 | 3.08 | 1.01 | 48.0 |
| Salem OR | 182 | 3.08 | 1.23 | 48.0 |
| Madison WI | 182 | 3.13 | 1.62 | 48.0 |
| Olympia WA | 182 | 3.21 | -1.41 | 48.0 |
| Montpelier VT | 182 | 3.23 | 1.37 | 48.0 |
| Boise ID | 182 | 3.32 | 2.76 | 48.0 |
| Frankfort KY | 182 | 3.37 | 2.51 | 48.0 |
| Lincoln NE | 182 | 3.43 | 1.75 | 48.0 |
| Phoenix AZ | 182 | 3.48 | -0.46 | 48.0 |
| Denver CO | 182 | 3.51 | 0.63 | 48.0 |
| Oklahoma City OK | 182 | 3.64 | 3.15 | 48.0 |
| Bismarck ND | 182 | 3.84 | 3.06 | 48.0 |
| Pierre SD | 182 | 4.34 | 3.32 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-07-27 08:00 CDT | Montgomery AL | 80.0°F | 79.0°F | +1.0° | 48.0 |
| 2026-07-27 05:00 AKDT | Juneau AK | 51.0°F | 52.0°F | -1.0° | 48.0 |
| 2026-07-27 06:00 MST | Phoenix AZ | 93.0°F | 94.0°F | -1.0° | 48.0 |
| 2026-07-27 08:00 CDT | Little Rock AR | 81.0°F | 84.0°F | -3.0° | 48.0 |
| 2026-07-27 06:00 PDT | Sacramento CA | 61.0°F | 59.0°F | +2.0° | 48.0 |
| 2026-07-27 07:00 MDT | Denver CO | 74.0°F | 75.0°F | -1.0° | 48.0 |
| 2026-07-27 09:00 EDT | Hartford CT | 70.0°F | 69.0°F | +1.0° | 48.0 |
| 2026-07-27 09:00 EDT | Dover DE | 75.0°F | 70.0°F | +5.0° | 48.0 |
| 2026-07-27 09:00 EDT | Tallahassee FL | 81.0°F | 82.0°F | -1.0° | 48.0 |
| 2026-07-27 09:00 EDT | Atlanta GA | 77.0°F | 80.0°F | -3.0° | 48.0 |
| 2026-07-27 03:00 HST | Honolulu HI | 75.0°F | 77.0°F | -2.0° | 48.0 |
| 2026-07-27 07:00 MDT | Boise ID | 67.0°F | 62.0°F | +5.0° | 48.0 |
| 2026-07-27 08:00 CDT | Springfield IL | 80.0°F | 79.0°F | +1.0° | 48.0 |
| 2026-07-27 09:00 EDT | Indianapolis IN | 78.0°F | 75.0°F | +3.0° | 48.0 |
| 2026-07-27 08:00 CDT | Des Moines IA | 80.0°F | 83.0°F | -3.0° | 48.0 |
| 2026-07-27 08:00 CDT | Topeka KS | 82.0°F | 82.0°F | +0.0° | 48.0 |
| 2026-07-27 09:00 EDT | Frankfort KY | 77.0°F | 71.0°F | +6.0° | 48.0 |
| 2026-07-27 08:00 CDT | Baton Rouge LA | 81.0°F | 81.0°F | +0.0° | 48.0 |
| 2026-07-27 09:00 EDT | Augusta ME | 67.0°F | 70.0°F | -3.0° | 48.0 |
| 2026-07-27 09:00 EDT | Annapolis MD | 77.0°F | 77.0°F | +0.0° | 48.0 |
| 2026-07-27 09:00 EDT | Boston MA | 68.0°F | 67.0°F | +1.0° | 48.0 |
| 2026-07-27 09:00 EDT | Lansing MI | 73.0°F | 77.0°F | -4.0° | 48.0 |
| 2026-07-27 08:00 CDT | Saint Paul MN | 78.0°F | 84.0°F | -6.0° | 48.0 |
| 2026-07-27 08:00 CDT | Jackson MS | 81.0°F | 81.0°F | +0.0° | 48.0 |
| 2026-07-27 08:00 CDT | Jefferson City MO | 81.0°F | 81.0°F | +0.0° | 48.0 |
| 2026-07-27 07:00 MDT | Helena MT | 64.0°F | 66.0°F | -2.0° | 48.0 |
| 2026-07-27 08:00 CDT | Lincoln NE | 82.0°F | 82.0°F | +0.0° | 48.0 |
| 2026-07-27 06:00 PDT | Carson City NV | 60.0°F | 55.0°F | +5.0° | 48.0 |
| 2026-07-27 09:00 EDT | Concord NH | 66.0°F | 66.0°F | +0.0° | 48.0 |
| 2026-07-27 09:00 EDT | Trenton NJ | 72.0°F | 74.0°F | -2.0° | 48.0 |
| 2026-07-27 07:00 MDT | Santa Fe NM | 68.0°F | 69.0°F | -1.0° | 48.0 |
| 2026-07-27 09:00 EDT | Albany NY | 70.0°F | 73.0°F | -3.0° | 48.0 |
| 2026-07-27 09:00 EDT | Raleigh NC | 75.0°F | 76.0°F | -1.0° | 48.0 |
| 2026-07-27 08:00 CDT | Bismarck ND | 72.0°F | 66.0°F | +6.0° | 48.0 |
| 2026-07-27 09:00 EDT | Columbus OH | 75.0°F | 72.0°F | +3.0° | 48.0 |
| 2026-07-27 08:00 CDT | Oklahoma City OK | 83.0°F | 77.0°F | +6.0° | 48.0 |
| 2026-07-27 06:00 PDT | Salem OR | 57.0°F | 53.0°F | +4.0° | 48.0 |
| 2026-07-27 09:00 EDT | Harrisburg PA | 73.0°F | 75.0°F | -2.0° | 48.0 |
| 2026-07-27 09:00 EDT | Providence RI | 69.0°F | 66.0°F | +3.0° | 48.0 |
| 2026-07-27 09:00 EDT | Columbia SC | 78.0°F | 77.0°F | +1.0° | 48.0 |