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 | 172 | 1.27 | 0.35 | 48.0 |
| Richmond VA | 172 | 1.59 | -0.44 | 48.0 |
| Indianapolis IN | 172 | 1.60 | -0.20 | 48.0 |
| Tallahassee FL | 172 | 1.63 | -1.04 | 48.0 |
| Little Rock AR | 172 | 1.70 | 0.92 | 48.0 |
| Charleston WV | 172 | 1.81 | 0.90 | 48.0 |
| Frankfort KY | 172 | 1.86 | 0.12 | 48.0 |
| Honolulu HI | 172 | 1.94 | -1.80 | 48.0 |
| Jackson MS | 172 | 1.95 | 0.73 | 48.0 |
| Augusta ME | 172 | 1.97 | 0.09 | 48.0 |
| Columbia SC | 172 | 1.97 | -0.97 | 48.0 |
| Trenton NJ | 172 | 2.03 | -0.85 | 48.0 |
| Montgomery AL | 172 | 2.06 | 0.17 | 48.0 |
| Boston MA | 172 | 2.10 | -0.83 | 48.0 |
| Baton Rouge LA | 172 | 2.22 | 0.85 | 48.0 |
| Annapolis MD | 172 | 2.23 | -1.15 | 48.0 |
| Nashville TN | 172 | 2.27 | 0.87 | 48.0 |
| Providence RI | 172 | 2.30 | -1.47 | 48.0 |
| Concord NH | 172 | 2.35 | -0.81 | 48.0 |
| Columbus OH | 172 | 2.39 | 0.99 | 48.0 |
| Dover DE | 172 | 2.40 | -1.72 | 48.0 |
| Jefferson City MO | 172 | 2.42 | 0.11 | 48.0 |
| Albany NY | 172 | 2.45 | -0.09 | 48.0 |
| Sacramento CA | 172 | 2.47 | 2.18 | 48.0 |
| Boise ID | 172 | 2.57 | -1.51 | 48.0 |
| Saint Paul MN | 172 | 2.57 | 0.71 | 48.0 |
| Harrisburg PA | 172 | 2.57 | -1.36 | 48.0 |
| Atlanta GA | 172 | 2.58 | 1.47 | 48.0 |
| Hartford CT | 172 | 2.63 | -0.20 | 48.0 |
| Helena MT | 172 | 2.66 | -0.37 | 48.0 |
| Oklahoma City OK | 172 | 2.69 | 1.16 | 48.0 |
| Santa Fe NM | 172 | 2.70 | 1.44 | 48.0 |
| Raleigh NC | 172 | 2.74 | -2.30 | 48.0 |
| Cheyenne WY | 172 | 2.79 | -0.83 | 48.0 |
| Salem OR | 172 | 2.86 | 2.21 | 48.0 |
| Des Moines IA | 172 | 2.97 | 2.09 | 48.0 |
| Lansing MI | 172 | 3.03 | 2.05 | 48.0 |
| Bismarck ND | 172 | 3.08 | -0.56 | 48.0 |
| Montpelier VT | 172 | 3.09 | 0.62 | 48.0 |
| Madison WI | 172 | 3.14 | 2.47 | 48.0 |
| Phoenix AZ | 172 | 3.22 | -0.03 | 48.0 |
| Pierre SD | 172 | 3.24 | 1.67 | 48.0 |
| Olympia WA | 172 | 3.36 | 2.10 | 48.0 |
| Denver CO | 172 | 3.39 | -0.28 | 48.0 |
| Juneau AK | 172 | 3.40 | 1.27 | 48.0 |
| Carson City NV | 172 | 3.42 | 0.37 | 48.0 |
| Springfield IL | 172 | 3.72 | 2.65 | 48.0 |
| Topeka KS | 172 | 4.13 | -0.55 | 48.0 |
| Salt Lake City UT | 172 | 4.19 | -1.94 | 48.0 |
| Lincoln NE | 172 | 4.22 | 3.02 | 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 22:00 CDT | Montgomery AL | 79.0°F | 76.0°F | +3.0° | 48.0 |
| 2026-09-19 19:00 AKDT | Juneau AK | 55.0°F | 55.0°F | +0.0° | 48.0 |
| 2026-09-19 20:00 MST | Phoenix AZ | 89.0°F | 98.0°F | -9.0° | 48.0 |
| 2026-09-19 22:00 CDT | Little Rock AR | 83.0°F | 84.0°F | -1.0° | 48.0 |
| 2026-09-19 20:00 PDT | Sacramento CA | 78.0°F | 74.0°F | +4.0° | 48.0 |
| 2026-09-19 21:00 MDT | Denver CO | 64.0°F | 61.0°F | +3.0° | 48.0 |
| 2026-09-19 23:00 EDT | Hartford CT | 55.0°F | 60.0°F | -5.0° | 48.0 |
| 2026-09-19 23:00 EDT | Dover DE | 68.0°F | 72.0°F | -4.0° | 48.0 |
| 2026-09-19 23:00 EDT | Tallahassee FL | 78.0°F | 81.0°F | -3.0° | 48.0 |
| 2026-09-19 23:00 EDT | Atlanta GA | 78.0°F | 72.0°F | +6.0° | 48.0 |
| 2026-09-19 17:00 HST | Honolulu HI | 84.0°F | 85.0°F | -1.0° | 48.0 |
| 2026-09-19 21:00 MDT | Boise ID | 67.0°F | 70.0°F | -3.0° | 48.0 |
| 2026-09-19 22:00 CDT | Springfield IL | 80.0°F | 79.0°F | +1.0° | 48.0 |
| 2026-09-19 23:00 EDT | Indianapolis IN | 77.0°F | 77.0°F | +0.0° | 48.0 |
| 2026-09-19 22:00 CDT | Des Moines IA | 72.0°F | 68.0°F | +4.0° | 48.0 |
| 2026-09-19 22:00 CDT | Topeka KS | 77.0°F | 73.0°F | +4.0° | 48.0 |
| 2026-09-19 23:00 EDT | Frankfort KY | 74.0°F | 78.0°F | -4.0° | 48.0 |
| 2026-09-19 22:00 CDT | Baton Rouge LA | 81.0°F | 79.0°F | +2.0° | 48.0 |
| 2026-09-19 23:00 EDT | Augusta ME | 48.0°F | 49.0°F | -1.0° | 48.0 |
| 2026-09-19 23:00 EDT | Annapolis MD | 68.0°F | 73.0°F | -5.0° | 48.0 |
| 2026-09-19 23:00 EDT | Boston MA | 55.0°F | 56.0°F | -1.0° | 48.0 |
| 2026-09-19 23:00 EDT | Lansing MI | 62.0°F | 62.0°F | +0.0° | 48.0 |
| 2026-09-19 22:00 CDT | Saint Paul MN | 61.0°F | 62.0°F | -1.0° | 48.0 |
| 2026-09-19 22:00 CDT | Jackson MS | 81.0°F | 81.0°F | +0.0° | 48.0 |
| 2026-09-19 22:00 CDT | Jefferson City MO | 81.0°F | 75.0°F | +6.0° | 48.0 |
| 2026-09-19 21:00 MDT | Helena MT | 57.0°F | 57.0°F | +0.0° | 48.0 |
| 2026-09-19 22:00 CDT | Lincoln NE | 71.0°F | 69.0°F | +2.0° | 48.0 |
| 2026-09-19 20:00 PDT | Carson City NV | 70.0°F | 72.0°F | -2.0° | 48.0 |
| 2026-09-19 23:00 EDT | Concord NH | 49.0°F | 45.0°F | +4.0° | 48.0 |
| 2026-09-19 23:00 EDT | Trenton NJ | 62.0°F | 64.0°F | -2.0° | 48.0 |
| 2026-09-19 21:00 MDT | Santa Fe NM | 63.0°F | 58.0°F | +5.0° | 48.0 |
| 2026-09-19 23:00 EDT | Albany NY | 54.0°F | 54.0°F | +0.0° | 48.0 |
| 2026-09-19 23:00 EDT | Raleigh NC | 74.0°F | 77.0°F | -3.0° | 48.0 |
| 2026-09-19 22:00 CDT | Bismarck ND | 62.0°F | 62.0°F | +0.0° | 48.0 |
| 2026-09-19 23:00 EDT | Columbus OH | 73.0°F | 72.0°F | +1.0° | 48.0 |
| 2026-09-19 22:00 CDT | Oklahoma City OK | 88.0°F | 85.0°F | +3.0° | 48.0 |
| 2026-09-19 20:00 PDT | Salem OR | 70.0°F | 60.0°F | +10.0° | 48.0 |
| 2026-09-19 23:00 EDT | Harrisburg PA | 65.0°F | 70.0°F | -5.0° | 48.0 |
| 2026-09-19 23:00 EDT | Providence RI | 53.0°F | 58.0°F | -5.0° | 48.0 |
| 2026-09-19 23:00 EDT | Columbia SC | 76.0°F | 77.0°F | -1.0° | 48.0 |