Weather in Grain Valley, MO
Grain Valley, Saturday, 8 August, 23:52
Overcast. Feels like 79°. High 89°, low 69°.
Monthly outlook for Grain Valley, MO: average high 87.3°, average low 69.7°. That is 0.8° above the climate normal for August. Precipitation is expected on 7 days (about 1.5 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 11 August (101.6°), the coolest 21 August (59.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 88.5° | 85.8° | +1.5° |
| 18 August – 27 August | 85.4° | 86.1° | -0.4° |
| 28 August – 6 September | at normal | 83.6° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Independence (9 mi).
0.03
Grain Valley, Sunday, 9 August
Light rain. High 91°, low 77°.
0Grain Valley, Monday, 10 August
Overcast. High 96°, low 77°.
0.02Grain Valley, Tuesday, 11 August
Light rain. High 102°, low 77°.
0.06Grain Valley, Wednesday, 12 August
Light rain. High 90°, low 70°.
0.04Grain Valley, Thursday, 13 August
Light rain. High 83°, low 72°.
0.15Grain Valley, Friday, 14 August
Light rain. High 75°, low 69°.
0.03Grain Valley, Saturday, 15 August
Light rain. High 87°, low 70°.
0.09Grain Valley, Sunday, 16 August
Light rain. High 85°, low 70°.
0.04Grain Valley, Monday, 17 August
Light rain. High 87°, low 69°.
0.65Grain Valley, Tuesday, 18 August
Heavy rain. High 90°, low 72°.
0Grain Valley, Wednesday, 19 August
Overcast. High 90°, low 72°.
0
Grain Valley, Thursday, 20 August
Partly cloudy. High 79°, low 62°.
0.31Grain Valley, Friday, 21 August
Rain. High 75°, low 59°.
0Grain Valley, Saturday, 22 August
Overcast. High 87°, low 63°.
0.02Grain Valley, Sunday, 23 August
Light rain. High 92°, low 69°.
0.09
Grain Valley, Monday, 24 August
Climate normal for this date — 60-year average.
0.14Grain Valley, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.2Grain Valley, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.07Grain Valley, Thursday, 27 August
Climate normal for this date — 60-year average.
0.08Grain Valley, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Grain Valley, Saturday, 29 August
Climate normal for this date — 60-year average.
0.14
Grain Valley, Sunday, 30 August
Climate normal for this date — 60-year average.
0.17Grain Valley, Monday, 31 August
Climate normal for this date — 60-year average.
0.16Grain Valley, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.13Grain Valley, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09Grain Valley, Thursday, 3 September
Climate normal for this date — 60-year average.
0.11Grain Valley, Friday, 4 September
Climate normal for this date — 60-year average.
0.1Grain Valley, Saturday, 5 September
Climate normal for this date — 60-year average.
0.09Grain Valley, Sunday, 6 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 Grain Valley, 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 Grain Valley, 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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