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 | 1.52 | 0.52 | 48.0 |
| Indianapolis IN | 172 | 1.69 | -0.62 | 48.0 |
| Jackson MS | 172 | 1.80 | 1.10 | 48.0 |
| Little Rock AR | 172 | 1.82 | -0.39 | 48.0 |
| Honolulu HI | 172 | 1.87 | -1.45 | 48.0 |
| Hartford CT | 172 | 1.95 | -0.03 | 48.0 |
| Atlanta GA | 172 | 1.98 | 0.59 | 48.0 |
| Providence RI | 172 | 2.01 | 0.38 | 48.0 |
| Trenton NJ | 172 | 2.02 | 0.33 | 48.0 |
| Charleston WV | 172 | 2.05 | -0.47 | 48.0 |
| Baton Rouge LA | 172 | 2.17 | 1.48 | 48.0 |
| Albany NY | 172 | 2.23 | 1.10 | 48.0 |
| Nashville TN | 172 | 2.24 | 0.06 | 48.0 |
| Augusta ME | 172 | 2.27 | 0.28 | 48.0 |
| Columbus OH | 172 | 2.27 | 1.29 | 48.0 |
| Lansing MI | 172 | 2.29 | 1.23 | 48.0 |
| Tallahassee FL | 172 | 2.33 | 0.54 | 48.0 |
| Juneau AK | 172 | 2.35 | 0.17 | 48.0 |
| Frankfort KY | 172 | 2.40 | 1.70 | 48.0 |
| Jefferson City MO | 172 | 2.40 | 1.38 | 48.0 |
| Raleigh NC | 172 | 2.40 | 0.28 | 48.0 |
| Saint Paul MN | 172 | 2.47 | 2.21 | 48.0 |
| Annapolis MD | 172 | 2.56 | 0.98 | 48.0 |
| Concord NH | 172 | 2.56 | 0.87 | 48.0 |
| Boston MA | 172 | 2.60 | 1.12 | 48.0 |
| Dover DE | 172 | 2.62 | 0.35 | 48.0 |
| Richmond VA | 172 | 2.63 | 0.81 | 48.0 |
| Montgomery AL | 172 | 2.65 | 1.14 | 48.0 |
| Topeka KS | 172 | 2.74 | 2.42 | 48.0 |
| Salt Lake City UT | 172 | 2.74 | -1.52 | 48.0 |
| Harrisburg PA | 172 | 2.77 | 1.15 | 48.0 |
| Madison WI | 172 | 2.83 | 1.98 | 48.0 |
| Springfield IL | 172 | 2.87 | 2.72 | 48.0 |
| Cheyenne WY | 172 | 2.88 | 0.49 | 48.0 |
| Des Moines IA | 172 | 2.89 | 2.24 | 48.0 |
| Carson City NV | 172 | 2.90 | 0.30 | 48.0 |
| Columbia SC | 172 | 2.92 | -2.15 | 48.0 |
| Sacramento CA | 172 | 3.01 | 0.42 | 48.0 |
| Salem OR | 172 | 3.02 | 1.06 | 48.0 |
| Montpelier VT | 172 | 3.13 | 1.04 | 48.0 |
| Boise ID | 172 | 3.16 | 2.80 | 48.0 |
| Helena MT | 172 | 3.22 | 2.40 | 48.0 |
| Santa Fe NM | 172 | 3.24 | -0.45 | 48.0 |
| Phoenix AZ | 172 | 3.32 | -0.51 | 48.0 |
| Denver CO | 172 | 3.46 | 1.34 | 48.0 |
| Oklahoma City OK | 172 | 3.48 | 3.27 | 48.0 |
| Olympia WA | 172 | 3.51 | -0.44 | 48.0 |
| Bismarck ND | 172 | 3.58 | 2.88 | 48.0 |
| Lincoln NE | 172 | 3.71 | 3.21 | 48.0 |
| Pierre SD | 172 | 5.15 | 4.74 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-07-24 22:00 CDT | Montgomery AL | 80.0°F | 79.0°F | +1.0° | 48.0 |
| 2026-07-24 19:00 AKDT | Juneau AK | 57.0°F | 60.0°F | -3.0° | 48.0 |
| 2026-07-24 20:00 MST | Phoenix AZ | 108.0°F | 112.0°F | -4.0° | 48.0 |
| 2026-07-24 22:00 CDT | Little Rock AR | 83.0°F | 81.0°F | +2.0° | 48.0 |
| 2026-07-24 20:00 PDT | Sacramento CA | 84.0°F | 78.0°F | +6.0° | 48.0 |
| 2026-07-24 21:00 MDT | Denver CO | 86.0°F | 77.0°F | +9.0° | 48.0 |
| 2026-07-24 23:00 EDT | Hartford CT | 66.0°F | 65.0°F | +1.0° | 48.0 |
| 2026-07-24 23:00 EDT | Dover DE | 69.0°F | 70.0°F | -1.0° | 48.0 |
| 2026-07-24 23:00 EDT | Tallahassee FL | 82.0°F | 81.0°F | +1.0° | 48.0 |
| 2026-07-24 23:00 EDT | Atlanta GA | 77.0°F | 74.0°F | +3.0° | 48.0 |
| 2026-07-24 17:00 HST | Honolulu HI | 82.0°F | 82.0°F | +0.0° | 48.0 |
| 2026-07-24 21:00 MDT | Boise ID | 97.0°F | 96.0°F | +1.0° | 48.0 |
| 2026-07-24 22:00 CDT | Springfield IL | 70.0°F | 70.0°F | +0.0° | 48.0 |
| 2026-07-24 23:00 EDT | Indianapolis IN | 71.0°F | 70.0°F | +1.0° | 48.0 |
| 2026-07-24 22:00 CDT | Des Moines IA | 71.0°F | 70.0°F | +1.0° | 48.0 |
| 2026-07-24 22:00 CDT | Topeka KS | 77.0°F | 78.0°F | -1.0° | 48.0 |
| 2026-07-24 23:00 EDT | Frankfort KY | 70.0°F | 70.0°F | +0.0° | 48.0 |
| 2026-07-24 22:00 CDT | Baton Rouge LA | 83.0°F | 84.0°F | -1.0° | 48.0 |
| 2026-07-24 23:00 EDT | Augusta ME | 64.0°F | 64.0°F | +0.0° | 48.0 |
| 2026-07-24 23:00 EDT | Annapolis MD | 72.0°F | 73.0°F | -1.0° | 48.0 |
| 2026-07-24 23:00 EDT | Boston MA | 69.0°F | 68.0°F | +1.0° | 48.0 |
| 2026-07-24 23:00 EDT | Lansing MI | 67.0°F | 68.0°F | -1.0° | 48.0 |
| 2026-07-24 22:00 CDT | Saint Paul MN | 75.0°F | 75.0°F | +0.0° | 48.0 |
| 2026-07-24 22:00 CDT | Jackson MS | 82.0°F | 82.0°F | +0.0° | 48.0 |
| 2026-07-24 22:00 CDT | Jefferson City MO | 72.0°F | 73.0°F | -1.0° | 48.0 |
| 2026-07-24 21:00 MDT | Helena MT | 87.0°F | 86.0°F | +1.0° | 48.0 |
| 2026-07-24 22:00 CDT | Lincoln NE | 75.0°F | 75.0°F | +0.0° | 48.0 |
| 2026-07-24 20:00 PDT | Carson City NV | 84.0°F | 86.0°F | -2.0° | 48.0 |
| 2026-07-24 23:00 EDT | Concord NH | 66.0°F | 64.0°F | +2.0° | 48.0 |
| 2026-07-24 23:00 EDT | Trenton NJ | 66.0°F | 69.0°F | -3.0° | 48.0 |
| 2026-07-24 21:00 MDT | Santa Fe NM | 77.0°F | 76.0°F | +1.0° | 48.0 |
| 2026-07-24 23:00 EDT | Albany NY | 66.0°F | 66.0°F | +0.0° | 48.0 |
| 2026-07-24 23:00 EDT | Raleigh NC | 71.0°F | 72.0°F | -1.0° | 48.0 |
| 2026-07-24 22:00 CDT | Bismarck ND | 83.0°F | 75.0°F | +8.0° | 48.0 |
| 2026-07-24 23:00 EDT | Columbus OH | 70.0°F | 69.0°F | +1.0° | 48.0 |
| 2026-07-24 22:00 CDT | Oklahoma City OK | 88.0°F | 82.0°F | +6.0° | 48.0 |
| 2026-07-24 20:00 PDT | Salem OR | 76.0°F | 75.0°F | +1.0° | 48.0 |
| 2026-07-24 23:00 EDT | Harrisburg PA | 68.0°F | 71.0°F | -3.0° | 48.0 |
| 2026-07-24 23:00 EDT | Providence RI | 65.0°F | 66.0°F | -1.0° | 48.0 |
| 2026-07-24 23:00 EDT | Columbia SC | 77.0°F | 76.0°F | +1.0° | 48.0 |