Weather in Harrisburg, MO
Harrisburg, Sunday, 9 August, 00:34
Mostly clear. Feels like 77°. High 97°, low 74°.
Monthly outlook for Harrisburg, MO: average high 86.8°, average low 69°. That is 0.3° above the climate normal for August. Precipitation is expected on 7 days (about 1.4 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 11 August (102.5°), the coolest 21 August (57.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 88.4° | 86.3° | +1.2° |
| 19 August – 28 August | 84° | 86.5° | -1.4° |
| 29 August – 7 September | at normal | 83.9° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Columbia (15 mi).
0
Harrisburg, Monday, 10 August
Overcast. High 100°, low 75°.
0
Harrisburg, Tuesday, 11 August
Mostly clear. High 102°, low 82°.
0.11
Harrisburg, Wednesday, 12 August
Rain. High 90°, low 71°.
0.45Harrisburg, Thursday, 13 August
Rain. High 84°, low 70°.
0.2Harrisburg, Friday, 14 August
Light rain. High 74°, low 68°.
0.13Harrisburg, Saturday, 15 August
Light rain. High 86°, low 68°.
0Harrisburg, Sunday, 16 August
Overcast. High 78°, low 68°.
0.1Harrisburg, Monday, 17 August
Light rain. High 85°, low 68°.
0.01Harrisburg, Tuesday, 18 August
Light rain. High 88°, low 69°.
0Harrisburg, Wednesday, 19 August
Overcast. High 89°, low 69°.
0Harrisburg, Thursday, 20 August
Mostly clear. High 79°, low 61°.
0.15Harrisburg, Friday, 21 August
Light rain. High 75°, low 57°.
0.01Harrisburg, Saturday, 22 August
Light rain. High 88°, low 63°.
0
Harrisburg, Sunday, 23 August
Partly cloudy. High 96°, low 69°.
0.23Harrisburg, Monday, 24 August
Rain. High 78°, low 71°.
0.12Harrisburg, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.15Harrisburg, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.09Harrisburg, Thursday, 27 August
Climate normal for this date — 60-year average.
0.09Harrisburg, Friday, 28 August
Climate normal for this date — 60-year average.
0.06Harrisburg, Saturday, 29 August
Climate normal for this date — 60-year average.
0.11Harrisburg, Sunday, 30 August
Climate normal for this date — 60-year average.
0.11
Harrisburg, Monday, 31 August
Climate normal for this date — 60-year average.
0.14Harrisburg, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.11Harrisburg, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Harrisburg, Thursday, 3 September
Climate normal for this date — 60-year average.
0.11Harrisburg, Friday, 4 September
Climate normal for this date — 60-year average.
0.06Harrisburg, Saturday, 5 September
Climate normal for this date — 60-year average.
0.06Harrisburg, Sunday, 6 September
Climate normal for this date — 60-year average.
0.07Harrisburg, Monday, 7 September
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Harrisburg, MO are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Harrisburg, MO since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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