Weather in Lake Mathews, CA
Lake Mathews, Sunday, 9 August, 01:47
Partly cloudy. Feels like 72°. High 99°, low 71°.
Monthly outlook for Lake Mathews, CA: average high 93.3°, average low 67.7°. That is 0.6° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 9 August (98.8°), the coolest 13 August (65.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 91.7° | 92.6° | -0.5° |
| 19 August – 28 August | 95.9° | 92.6° | +1.9° |
| 29 August – 7 September | at normal | 93.6° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Riverside (8 mi).
0
Lake Mathews, Monday, 10 August
Partly cloudy. High 95°, low 70°.
0Lake Mathews, Tuesday, 11 August
Partly cloudy. High 97°, low 70°.
0
Lake Mathews, Wednesday, 12 August
Clear. High 94°, low 68°.
0
Lake Mathews, Thursday, 13 August
Overcast. High 91°, low 65°.
0Lake Mathews, Friday, 14 August
Overcast. High 89°, low 66°.
0.03
Lake Mathews, Saturday, 15 August
Light rain. High 78°, low 69°.
0Lake Mathews, Sunday, 16 August
Overcast. High 89°, low 67°.
0Lake Mathews, Monday, 17 August
Overcast. High 92°, low 67°.
0Lake Mathews, Tuesday, 18 August
Partly cloudy. High 93°, low 67°.
0Lake Mathews, Wednesday, 19 August
Overcast. High 95°, low 67°.
0Lake Mathews, Thursday, 20 August
Partly cloudy. High 96°, low 66°.
0Lake Mathews, Friday, 21 August
Partly cloudy. High 96°, low 67°.
0Lake Mathews, Saturday, 22 August
Clear. High 97°, low 68°.
0Lake Mathews, Sunday, 23 August
Clear. High 96°, low 67°.
0Lake Mathews, Monday, 24 August
Clear. High 96°, low 67°.
0
Lake Mathews, Tuesday, 25 August
Climate normal for this date — 60-year average.
0Lake Mathews, Wednesday, 26 August
Climate normal for this date — 60-year average.
0Lake Mathews, Thursday, 27 August
Climate normal for this date — 60-year average.
0Lake Mathews, Friday, 28 August
Climate normal for this date — 60-year average.
0Lake Mathews, Saturday, 29 August
Climate normal for this date — 60-year average.
0Lake Mathews, Sunday, 30 August
Climate normal for this date — 60-year average.
0Lake Mathews, Monday, 31 August
Climate normal for this date — 60-year average.
0.01Lake Mathews, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.02Lake Mathews, Wednesday, 2 September
Climate normal for this date — 60-year average.
0Lake Mathews, Thursday, 3 September
Climate normal for this date — 60-year average.
0Lake Mathews, Friday, 4 September
Climate normal for this date — 60-year average.
0.01Lake Mathews, Saturday, 5 September
Climate normal for this date — 60-year average.
0.02Lake Mathews, Sunday, 6 September
Climate normal for this date — 60-year average.
0Lake Mathews, 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 Lake Mathews, CA 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 Lake Mathews, CA 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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