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 | 171 | 1.13 | 0.40 | 48.0 |
| Jackson MS | 171 | 1.33 | 0.74 | 48.0 |
| Raleigh NC | 171 | 1.43 | 0.38 | 48.0 |
| Baton Rouge LA | 171 | 1.64 | 0.61 | 48.0 |
| Little Rock AR | 171 | 1.67 | -0.28 | 48.0 |
| Honolulu HI | 171 | 1.69 | -0.33 | 48.0 |
| Richmond VA | 171 | 1.78 | -0.72 | 48.0 |
| Lansing MI | 171 | 1.80 | 0.12 | 48.0 |
| Providence RI | 171 | 1.87 | 0.02 | 48.0 |
| Dover DE | 171 | 2.05 | -0.25 | 48.0 |
| Augusta ME | 171 | 2.08 | -0.03 | 48.0 |
| Albany NY | 171 | 2.09 | 0.33 | 48.0 |
| Hartford CT | 171 | 2.12 | 0.43 | 48.0 |
| Oklahoma City OK | 171 | 2.14 | 0.08 | 48.0 |
| Saint Paul MN | 171 | 2.16 | -0.48 | 48.0 |
| Madison WI | 171 | 2.26 | 0.84 | 48.0 |
| Sacramento CA | 171 | 2.27 | 0.39 | 48.0 |
| Harrisburg PA | 171 | 2.27 | -0.09 | 48.0 |
| Boston MA | 171 | 2.33 | 0.27 | 48.0 |
| Concord NH | 171 | 2.34 | -0.90 | 48.0 |
| Trenton NJ | 171 | 2.36 | 0.86 | 48.0 |
| Charleston WV | 171 | 2.40 | 0.50 | 48.0 |
| Annapolis MD | 171 | 2.41 | 0.06 | 48.0 |
| Salem OR | 171 | 2.41 | 1.02 | 48.0 |
| Nashville TN | 171 | 2.42 | 2.09 | 48.0 |
| Boise ID | 171 | 2.49 | -1.04 | 48.0 |
| Atlanta GA | 171 | 2.55 | 1.96 | 48.0 |
| Columbus OH | 171 | 2.57 | 0.94 | 48.0 |
| Des Moines IA | 171 | 2.65 | 0.27 | 48.0 |
| Helena MT | 171 | 2.65 | -0.46 | 48.0 |
| Carson City NV | 171 | 2.65 | -1.50 | 48.0 |
| Montpelier VT | 171 | 2.68 | 0.30 | 48.0 |
| Pierre SD | 171 | 2.71 | -1.49 | 48.0 |
| Lincoln NE | 171 | 2.80 | 0.99 | 48.0 |
| Tallahassee FL | 171 | 2.88 | 1.35 | 48.0 |
| Olympia WA | 171 | 2.98 | -0.32 | 48.0 |
| Topeka KS | 171 | 2.99 | 1.92 | 48.0 |
| Indianapolis IN | 171 | 3.02 | 2.14 | 48.0 |
| Columbia SC | 171 | 3.06 | 2.57 | 48.0 |
| Phoenix AZ | 171 | 3.10 | -1.92 | 48.0 |
| Frankfort KY | 171 | 3.14 | 2.77 | 48.0 |
| Santa Fe NM | 171 | 3.20 | -1.67 | 48.0 |
| Bismarck ND | 171 | 3.20 | -2.30 | 48.0 |
| Juneau AK | 171 | 3.39 | 0.80 | 48.0 |
| Jefferson City MO | 171 | 3.39 | 2.95 | 48.0 |
| Salt Lake City UT | 171 | 3.40 | -1.87 | 48.0 |
| Montgomery AL | 171 | 3.57 | 1.80 | 48.0 |
| Denver CO | 171 | 3.58 | 1.25 | 48.0 |
| Cheyenne WY | 171 | 3.71 | 1.01 | 48.0 |
| Springfield IL | 171 | 3.88 | 3.48 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-08-19 21:00 CDT | Montgomery AL | 86.0°F | 84.0°F | +2.0° | 48.0 |
| 2026-08-19 18:00 AKDT | Juneau AK | 61.0°F | 59.0°F | +2.0° | 48.0 |
| 2026-08-19 19:00 MST | Phoenix AZ | 105.0°F | 108.0°F | -3.0° | 48.0 |
| 2026-08-19 21:00 CDT | Little Rock AR | 92.0°F | 92.0°F | +0.0° | 48.0 |
| 2026-08-19 19:00 PDT | Sacramento CA | 87.0°F | 90.0°F | -3.0° | 48.0 |
| 2026-08-19 20:00 MDT | Denver CO | 77.0°F | 84.0°F | -7.0° | 48.0 |
| 2026-08-19 22:00 EDT | Hartford CT | 75.0°F | 72.0°F | +3.0° | 48.0 |
| 2026-08-19 22:00 EDT | Dover DE | 76.0°F | 78.0°F | -2.0° | 48.0 |
| 2026-08-19 22:00 EDT | Tallahassee FL | 82.0°F | 77.0°F | +5.0° | 48.0 |
| 2026-08-19 22:00 EDT | Atlanta GA | 86.0°F | 80.0°F | +6.0° | 48.0 |
| 2026-08-19 16:00 HST | Honolulu HI | 84.0°F | 87.0°F | -3.0° | 48.0 |
| 2026-08-19 20:00 MDT | Boise ID | 90.0°F | 95.0°F | -5.0° | 48.0 |
| 2026-08-19 21:00 CDT | Springfield IL | 74.0°F | 76.0°F | -2.0° | 48.0 |
| 2026-08-19 22:00 EDT | Indianapolis IN | 73.0°F | 73.0°F | +0.0° | 48.0 |
| 2026-08-19 21:00 CDT | Des Moines IA | 72.0°F | 75.0°F | -3.0° | 48.0 |
| 2026-08-19 21:00 CDT | Topeka KS | 76.0°F | 76.0°F | +0.0° | 48.0 |
| 2026-08-19 22:00 EDT | Frankfort KY | 75.0°F | 76.0°F | -1.0° | 48.0 |
| 2026-08-19 21:00 CDT | Baton Rouge LA | 88.0°F | 87.0°F | +1.0° | 48.0 |
| 2026-08-19 22:00 EDT | Augusta ME | 67.0°F | 67.0°F | +0.0° | 48.0 |
| 2026-08-19 22:00 EDT | Annapolis MD | 81.0°F | 78.0°F | +3.0° | 48.0 |
| 2026-08-19 22:00 EDT | Boston MA | 77.0°F | 80.0°F | -3.0° | 48.0 |
| 2026-08-19 22:00 EDT | Lansing MI | 69.0°F | 66.0°F | +3.0° | 48.0 |
| 2026-08-19 21:00 CDT | Saint Paul MN | 72.0°F | 70.0°F | +2.0° | 48.0 |
| 2026-08-19 21:00 CDT | Jackson MS | 88.0°F | 89.0°F | -1.0° | 48.0 |
| 2026-08-19 21:00 CDT | Jefferson City MO | 76.0°F | 77.0°F | -1.0° | 48.0 |
| 2026-08-19 20:00 MDT | Helena MT | 76.0°F | 80.0°F | -4.0° | 48.0 |
| 2026-08-19 21:00 CDT | Lincoln NE | 74.0°F | 70.0°F | +4.0° | 48.0 |
| 2026-08-19 19:00 PDT | Carson City NV | 85.0°F | 88.0°F | -3.0° | 48.0 |
| 2026-08-19 22:00 EDT | Concord NH | 70.0°F | 67.0°F | +3.0° | 48.0 |
| 2026-08-19 22:00 EDT | Trenton NJ | 77.0°F | 77.0°F | +0.0° | 48.0 |
| 2026-08-19 20:00 MDT | Santa Fe NM | 81.0°F | 70.0°F | +11.0° | 48.0 |
| 2026-08-19 22:00 EDT | Albany NY | 70.0°F | 71.0°F | -1.0° | 48.0 |
| 2026-08-19 22:00 EDT | Raleigh NC | 81.0°F | 81.0°F | +0.0° | 48.0 |
| 2026-08-19 21:00 CDT | Bismarck ND | 74.0°F | 78.0°F | -4.0° | 48.0 |
| 2026-08-19 22:00 EDT | Columbus OH | 71.0°F | 69.0°F | +2.0° | 48.0 |
| 2026-08-19 21:00 CDT | Oklahoma City OK | 96.0°F | 97.0°F | -1.0° | 48.0 |
| 2026-08-19 19:00 PDT | Salem OR | 79.0°F | 86.0°F | -7.0° | 48.0 |
| 2026-08-19 22:00 EDT | Harrisburg PA | 75.0°F | 74.0°F | +1.0° | 48.0 |
| 2026-08-19 22:00 EDT | Providence RI | 74.0°F | 74.0°F | +0.0° | 48.0 |
| 2026-08-19 22:00 EDT | Columbia SC | 85.0°F | 84.0°F | +1.0° | 48.0 |