Concrete Pouring Weather in Mandeville, LA: 10-Day Windows & Best Months
By NOAA 1991–2020 normals, Mandeville keeps a concrete pouring window open in all 12 months — a year-round season few US cities match. The single best month is October, averaging 24 days that clear every check — highs of 79°F, lows near 57°F, and a 21% daily rain chance. Below: today through day 10 against the label rules, then the year at a glance.
GOOD — every label check passes MARGINAL — one soft fail NO — hard fail or several soft
The rules this check uses
The Mandeville strip runs on these rows — bagged-mix consensus for DIY-scale work, ruled by the 48-hour freeze check. Structural pours answer to an engineer and ACI, not to this page.
| Check | Threshold | Why it matters |
|---|---|---|
| Air temperature | 40–90°F — ideal 50–85°F | The film (or mix) chemistry runs on temperature — both while you work and for the first hours after. |
| Overnight low | ≥40°F during the first 48 h | Curing continues after dark; the first night can undo a perfect afternoon. |
| Dry before | no soaking (≥1.0") in the prior 24 h | Checked backward from your start hour using the two look-back days in the forecast data. |
| Dry after | <0.1" rain for 6 h after (12 h light rain after finishing still risks surface marks) | The engine sums forecast rain hour by hour through the cure window for Mandeville. |
| Wind | ≤20 mph (rapid surface drying up to 28 mph) | Hot wind pulls bleed water out faster than the slab can handle. |
Always follow your product label — formulas vary. The table above is the typical range across major manufacturers, not a promise about your can.
Best months for concrete pouring in Mandeville
| Month | Avg high | Avg low | Rain odds/day | Workable days | |
|---|---|---|---|---|---|
| January | 62°F | 40°F | 29% | 15 | |
| February | 66°F | 44°F | 30% | 20 | |
| March | 72°F | 49°F | 27% | 23 | |
| April | 78°F | 55°F | 22% | 23 | |
| May | 84°F | 63°F | 24% | 24 | |
| June | 89°F | 69°F | 35% | 19 | |
| July | 90°F | 71°F | 41% | 7 | |
| August | 90°F | 72°F | 35% | 9 | |
| September | 87°F | 68°F | 27% | 22 | |
| October | 79°F | 57°F | 21% | 24 | |
| November | 70°F | 47°F | 22% | 23 | |
| December | 64°F | 43°F | 25% | 23 |
Mandeville's calendar never really closes: even January, the leanest month, averages 15 workable days against the 40–90°F rules. The 10-day strip above matters more here than any season chart. The Louisiana table ranks every listed city by the same math.
July here fails on heat, not rain: the average high of 90°F sits over the 90°F label ceiling, and 19 of 31 days typically top 90°F. Midsummer work moves to dawn or waits for October.
The rain odds swing hard across the year — 21% of days in October up to 41% in July. Season the plan accordingly: prep in the wet months, apply in the dry ones.
Sealing the same driveway later? Sealcoating in Mandeville wants warmer nights (50°F+) than the pour did.
Source honesty: every monthly figure on this page is the 1991–2020 normal at Covington 4 Nnw, La Us, 20.7 km from Mandeville's center — your block's shade lines and wind exposure sit on top of that baseline. Scoring details are on the methodology page.
Mandeville by the numbers
- Hottest month: July — 90°F average high, 19 days topping 90°F.
- The cold floor is January at 62°F afternoons and 40°F overnight.
- Measurable rain: July leads at 41% of days; October is the quiet end at 21%.
- Bottom line for Mandeville: roughly 233 workable concrete pouring days a year.
Prep checklist
- Clear the 48-hour rule first: two nights over 40°F. August opens that door in Mandeville; January (40°F average lows) slams it.
- Nothing gets mixed until the site is staged — braced forms, compacted damp base, rinsed tools, a second pair of hands.
- Cut plastic sheeting and weight it at the pour's edge — Mandeville sees rain on 21% of October days, and the 6-hour rule doesn't negotiate.
- Mix to a low slump — thick oatmeal, not soup; extra water now is a weak surface forever.
- Timing beats muscle — screed wet, float at the dull stage, and never chase bleed water with a trowel.
- Edge and joint with an edger + float set — control joints every 2–3 slab-thicknesses in feet.
- Hold the moisture in (sheeting or misting); when June nights dip toward 69°F, a curing blanket is the difference.
- Keep feet off 24–48 hours and cars off a week; structural pours follow the engineer and ACI, full stop.
Gear that saves a window
Transparency note: gear links here become affiliate links only when the program is enabled — today they are plain references. See the affiliate disclosure.
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Plastic sheeting
Emergency rain cover and moisture-holding cure layer.
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IR surface thermometer
Track slab temperature, not just the forecast.
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Concrete mix
An 80-lb bag yields about 0.6 cu ft — do the math twice.
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Edger + float set
Rounded edges and a flat surface before it sets.
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Curing blanket
Holds heat through cold nights in the critical 48 hours.
FAQ
What temperature is too cold to pour concrete?
The line is a 40°F low inside the first 48 hours; an actual freeze (32°F) physically damages young concrete. Mandeville's January nights average 40°F — firmly out — while October nights hold near 57°F. Small pours only; structural work follows engineer/ACI specs.
Can you pour concrete before rain?
The engine wants 6 protected hours; light rain later actually feeds the cure. With 41% rain-day odds in July versus 21% in October, Mandeville's dry-season pours barely think about this rule and wet-season pours live by the radar. For small DIY pours; structural schedules follow ACI.
How long does concrete need to be protected from freezing?
Keep it above freezing for at least the first 48 hours (the engine calls any sub-40°F low in that window a NO). In Mandeville that rules out roughly January-adjacent months entirely and makes shoulder-season pours a two-night forecast decision. DIY scope; anything structural follows engineer/ACI cold-weather practice.
Is it OK to pour concrete in hot weather?
To a 90°F high, yes — with shade, cool mix water, a damp subgrade, and a dawn start. Above 90°F the surface sets while the core is plastic and shrinkage cracks map the slab. Mandeville averages 19 such days in July, which is why summer pours here move to first light.
How long before you can drive on new concrete?
A week before tires, 24–48 hours before feet — at October-typical Mandeville temperatures (79°F highs). When nights slide toward 40°F, add days: cure speed is temperature. Early loads print permanent marks; the bag's cure table wins every argument.
Best season for concrete work in Mandeville?
The table above says October, May and November: enough warmth for the 48-hour cure, short of the 90°F ceiling. For small DIY pours that's the whole answer; structural pours schedule to engineer/ACI requirements, not to a best-months chart.
Related
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- All outdoor project weather in Mandeville
Concrete Pouring nearby
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- New Orleans, LA
- Metairie, LA
- Gulfport, MS
- Baton Rouge, LA
- Houma, LA
- Hattiesburg, MS
- Lafayette, LA
Guides
Climatology: NOAA 1991–2020 normals via COVINGTON 4 NNW, LA US (20.7 km from Mandeville center, elevation 40 ft); live outlook by Open-Meteo.