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) |
|---|---|---|---|---|
| Saint Paul MN | 172 | 1.72 | -0.89 | 48.0 |
| Albany NY | 172 | 1.76 | -0.37 | 48.0 |
| Des Moines IA | 172 | 1.92 | -0.98 | 48.0 |
| Providence RI | 172 | 1.97 | -0.31 | 48.0 |
| Honolulu HI | 172 | 2.08 | -1.92 | 48.0 |
| Columbus OH | 172 | 2.10 | 0.91 | 48.0 |
| Oklahoma City OK | 172 | 2.16 | 0.23 | 48.0 |
| Richmond VA | 172 | 2.20 | -0.12 | 48.0 |
| Hartford CT | 172 | 2.27 | -0.41 | 48.0 |
| Boston MA | 172 | 2.27 | 0.23 | 48.0 |
| Trenton NJ | 172 | 2.30 | -0.29 | 48.0 |
| Little Rock AR | 172 | 2.32 | 1.26 | 48.0 |
| Sacramento CA | 172 | 2.34 | 1.59 | 48.0 |
| Topeka KS | 172 | 2.34 | -0.47 | 48.0 |
| Lansing MI | 172 | 2.35 | 0.27 | 48.0 |
| Salem OR | 172 | 2.36 | -0.84 | 48.0 |
| Indianapolis IN | 172 | 2.39 | 0.18 | 48.0 |
| Bismarck ND | 172 | 2.50 | 0.33 | 48.0 |
| Atlanta GA | 172 | 2.53 | 1.81 | 48.0 |
| Springfield IL | 172 | 2.53 | 0.97 | 48.0 |
| Austin TX | 172 | 2.53 | 1.95 | 48.0 |
| Jefferson City MO | 172 | 2.55 | 0.37 | 48.0 |
| Annapolis MD | 172 | 2.56 | 0.88 | 48.0 |
| Juneau AK | 172 | 2.59 | 0.47 | 48.0 |
| Dover DE | 172 | 2.60 | 0.11 | 48.0 |
| Lincoln NE | 172 | 2.61 | -1.67 | 48.0 |
| Jackson MS | 172 | 2.62 | 1.31 | 48.0 |
| Boise ID | 172 | 2.64 | 1.07 | 48.0 |
| Raleigh NC | 172 | 2.65 | 1.30 | 48.0 |
| Frankfort KY | 172 | 2.69 | 0.91 | 48.0 |
| Madison WI | 172 | 2.69 | -0.22 | 48.0 |
| Tallahassee FL | 172 | 2.72 | 1.33 | 48.0 |
| Montgomery AL | 172 | 2.76 | 0.93 | 48.0 |
| Salt Lake City UT | 172 | 2.80 | 0.38 | 48.0 |
| Pierre SD | 172 | 2.81 | -0.08 | 48.0 |
| Harrisburg PA | 172 | 2.83 | -0.50 | 48.0 |
| Olympia WA | 172 | 2.85 | 1.19 | 48.0 |
| Helena MT | 172 | 2.92 | 1.92 | 48.0 |
| Carson City NV | 172 | 3.01 | -0.20 | 48.0 |
| Columbia SC | 172 | 3.01 | 1.84 | 48.0 |
| Charleston WV | 172 | 3.02 | 1.58 | 48.0 |
| Augusta ME | 172 | 3.15 | -2.60 | 48.0 |
| Santa Fe NM | 172 | 3.15 | -1.45 | 48.0 |
| Cheyenne WY | 172 | 3.31 | -0.40 | 48.0 |
| Concord NH | 172 | 3.47 | -1.97 | 48.0 |
| Baton Rouge LA | 172 | 3.49 | 3.01 | 48.0 |
| Montpelier VT | 172 | 3.56 | 1.75 | 48.0 |
| Denver CO | 172 | 3.62 | 2.09 | 48.0 |
| Nashville TN | 172 | 4.14 | 1.71 | 48.0 |
| Phoenix AZ | 172 | 4.38 | 1.41 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-09-28 22:00 CDT | Montgomery AL | 67.0°F | 67.0°F | +0.0° | 48.0 |
| 2026-09-28 19:00 AKDT | Juneau AK | 48.0°F | 48.0°F | +0.0° | 48.0 |
| 2026-09-28 20:00 MST | Phoenix AZ | 81.0°F | 71.0°F | +10.0° | 48.0 |
| 2026-09-28 22:00 CDT | Little Rock AR | 72.0°F | 71.0°F | +1.0° | 48.0 |
| 2026-09-28 20:00 PDT | Sacramento CA | 73.0°F | 71.0°F | +2.0° | 48.0 |
| 2026-09-28 21:00 MDT | Denver CO | 66.0°F | 64.0°F | +2.0° | 48.0 |
| 2026-09-28 23:00 EDT | Hartford CT | 59.0°F | 57.0°F | +2.0° | 48.0 |
| 2026-09-28 23:00 EDT | Dover DE | 63.0°F | 64.0°F | -1.0° | 48.0 |
| 2026-09-28 23:00 EDT | Tallahassee FL | 72.0°F | 68.0°F | +4.0° | 48.0 |
| 2026-09-28 23:00 EDT | Atlanta GA | 66.0°F | 60.0°F | +6.0° | 48.0 |
| 2026-09-28 17:00 HST | Honolulu HI | 84.0°F | 85.0°F | -1.0° | 48.0 |
| 2026-09-28 21:00 MDT | Boise ID | 64.0°F | 63.0°F | +1.0° | 48.0 |
| 2026-09-28 22:00 CDT | Springfield IL | 62.0°F | 52.0°F | +10.0° | 48.0 |
| 2026-09-28 23:00 EDT | Indianapolis IN | 60.0°F | 65.0°F | -5.0° | 48.0 |
| 2026-09-28 22:00 CDT | Des Moines IA | 63.0°F | 65.0°F | -2.0° | 48.0 |
| 2026-09-28 22:00 CDT | Topeka KS | 68.0°F | 67.0°F | +1.0° | 48.0 |
| 2026-09-28 23:00 EDT | Frankfort KY | 59.0°F | 59.0°F | +0.0° | 48.0 |
| 2026-09-28 22:00 CDT | Baton Rouge LA | 78.0°F | 79.0°F | -1.0° | 48.0 |
| 2026-09-28 23:00 EDT | Augusta ME | 54.0°F | 54.0°F | +0.0° | 48.0 |
| 2026-09-28 23:00 EDT | Annapolis MD | 64.0°F | 66.0°F | -2.0° | 48.0 |
| 2026-09-28 23:00 EDT | Boston MA | 59.0°F | 57.0°F | +2.0° | 48.0 |
| 2026-09-28 23:00 EDT | Lansing MI | 56.0°F | 56.0°F | +0.0° | 48.0 |
| 2026-09-28 22:00 CDT | Saint Paul MN | 64.0°F | 66.0°F | -2.0° | 48.0 |
| 2026-09-28 22:00 CDT | Jackson MS | 74.0°F | 74.0°F | +0.0° | 48.0 |
| 2026-09-28 22:00 CDT | Jefferson City MO | 67.0°F | 61.0°F | +6.0° | 48.0 |
| 2026-09-28 21:00 MDT | Helena MT | 55.0°F | 60.0°F | -5.0° | 48.0 |
| 2026-09-28 22:00 CDT | Lincoln NE | 68.0°F | 68.0°F | +0.0° | 48.0 |
| 2026-09-28 20:00 PDT | Carson City NV | 63.0°F | 63.0°F | +0.0° | 48.0 |
| 2026-09-28 23:00 EDT | Concord NH | 55.0°F | 54.0°F | +1.0° | 48.0 |
| 2026-09-28 23:00 EDT | Trenton NJ | 62.0°F | 61.0°F | +1.0° | 48.0 |
| 2026-09-28 21:00 MDT | Santa Fe NM | 53.0°F | 57.0°F | -4.0° | 48.0 |
| 2026-09-28 23:00 EDT | Albany NY | 59.0°F | 57.0°F | +2.0° | 48.0 |
| 2026-09-28 23:00 EDT | Raleigh NC | 67.0°F | 70.0°F | -3.0° | 48.0 |
| 2026-09-28 22:00 CDT | Bismarck ND | 60.0°F | 65.0°F | -5.0° | 48.0 |
| 2026-09-28 23:00 EDT | Columbus OH | 61.0°F | 60.0°F | +1.0° | 48.0 |
| 2026-09-28 22:00 CDT | Oklahoma City OK | 80.0°F | 80.0°F | +0.0° | 48.0 |
| 2026-09-28 20:00 PDT | Salem OR | 59.0°F | 62.0°F | -3.0° | 48.0 |
| 2026-09-28 23:00 EDT | Harrisburg PA | 62.0°F | 64.0°F | -2.0° | 48.0 |
| 2026-09-28 23:00 EDT | Providence RI | 60.0°F | 57.0°F | +3.0° | 48.0 |
| 2026-09-28 23:00 EDT | Columbia SC | 66.0°F | 64.0°F | +2.0° | 48.0 |