Concrete Pouring Weather in Winston-Salem, NC: 10-Day Windows & Best Months

• AugustBest month
• 154 daysWorkable days/yr
• 9 moSeason length
• 28–41%Rain-day odds
• Winston-Salem by month

The next 10 days in Winston-Salem

The rules this check uses

The Winston-Salem 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.

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 Winston-Salem

The working season runs March through November — about 155 workable days a year. The edges are night-limited: label rules want overnight lows of 40°F+, and Winston-Salem's nights only average that from March to October. The North Carolina table ranks every listed city by the same math.

Temperature-wise, summer passes easily in Winston-Salem; the rain rules do the filtering. With a 41% daily rain chance in July, roughly one day in 2 starts a wet stretch that voids the cure window.

Flip side of the driveway calendar: sealing in Winston-Salem opens later and closes earlier than pouring, on the same forecast.

Source honesty: every monthly figure on this page is the 1991–2020 normal at Winston Salem Rynlds Ap, Nc Us, 4.7 km from Winston-Salem's center — your block's shade lines and wind exposure sit on top of that baseline. Scoring details are on the methodology page.

For contrast, Wilmington, NC’s concrete pouring calendar sits one stop back on this route, and concrete pouring in Bismarck, ND is next in line.

Winston-Salem by the numbers

• Hottest month: July — 88°F average high, 0 days topping 90°F.
• The cold floor is January at 49°F afternoons and 31°F overnight.
• Measurable rain: July leads at 41% of days; November is the quiet end at 28%.
• The 40°F-night season spans March–October here.
• Bottom line for Winston-Salem: roughly 155 workable concrete pouring days a year.

Prep checklist

1. Check two nights, not one afternoon: both must hold 40°F+. In Winston-Salem that math works March through November — outside it, 31°F lows own the calendar.
2. Nothing gets mixed until the site is staged — braced forms, compacted damp base, rinsed tools, a second pair of hands.
3. Cut plastic sheeting and weight it at the pour's edge — Winston-Salem sees rain on 30% of October days, and the 6-hour rule doesn't negotiate.
4. Mix to a low slump — thick oatmeal, not soup; extra water now is a weak surface forever.
5. Timing beats muscle — screed wet, float at the dull stage, and never chase bleed water with a trowel.
6. Edge and joint with an edger + float set — control joints every 2–3 slab-thicknesses in feet.
7. Cure damp: sheeting or misting for days; against a Winston-Salem cold snap, a curing blanket guards the first 48 hours.
8. Keep feet off 24–48 hours and cars off a week; structural pours follow the engineer and ACI, full stop.

Pro moves for Winston-Salem conditions

• Order air-entrained ready-mix for any outdoor slab in a freeze-thaw climate — no finishing technique or sealer can add that protection after the pour.
• Dampen the subgrade and forms before placing concrete on a warm, dry day so they don't suck water out of the bottom of the slab.
• Wait until the bleed-water sheen disappears before floating and troweling; working water back into the surface causes dusting and scaling later.
• Mixing bagged concrete solo invites cold joints — line up help so batches stay continuous, because a slab that stiffens between loads bonds poorly.
• Keep DIY pours to pads, walkways, and fence posts; structural footings, retaining walls, and suspended slabs need engineered specs per ACI, not a weather window.

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.

• Edger + float set

  Rounded edges and a flat surface before it sets.

  See options →
• Concrete mix

  An 80-lb bag yields about 0.6 cu ft — do the math twice.

  Browse picks →
• Curing blanket

  Holds heat through cold nights in the critical 48 hours.

  Compare picks →
• Plastic sheeting

  Emergency rain cover and moisture-holding cure layer.

  Shop the category →
• IR surface thermometer

  Track slab temperature, not just the forecast.

  See options →

Concrete Pouring glossary

Evaporation rate

How fast surface moisture leaves fresh concrete, driven by temperature, wind, and humidity; rates above about 0.2 lb per square foot per hour invite plastic shrinkage cracking.

Plastic shrinkage cracking

Shallow, random cracks forming within hours of placement when the surface dries faster than bleed water can replace it; wind and sun are the usual culprits.

Bleed water

Mix water that rises to the surface after placement; finishing before it evaporates traps it under the trowel, creating a weak, dusty top layer.

Hydration

The chemical reaction between cement and water that hardens concrete; it needs moisture and temperatures above roughly 40°F, and continues gaining strength for weeks.

Curing compound

A sprayed or rolled membrane that seals moisture inside fresh concrete when wet curing isn't practical; some types must be stripped before paint or sealer.

Air entrainment

Microscopic air bubbles added to the mix that give exterior concrete freeze-thaw and deicer resistance; it must be ordered in the mix, not added later.

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Climatology: NOAA 1991–2020 normals via WINSTON SALEM RYNLDS AP, NC US (4.7 km from Winston-Salem center, elevation 970 ft); live outlook by Open-Meteo.