Concrete Pouring Weather in Salt Lake City, UT: 10-Day Windows & Best Months
The concrete pouring season in Salt Lake City runs April through June — 6 months averaging at least 8 workable days by NOAA 1991–2020 normals. June leads the calendar with 25 workable days: average high 84°F, low 59°F, rain on 17% of days. 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 Salt Lake City 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 Salt Lake City. |
| 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 Salt Lake City
| Month | Avg high | Avg low | Rain odds/day | Workable days | |
|---|---|---|---|---|---|
| January | 39°F | 24°F | 33% | 0 | |
| February | 45°F | 29°F | 33% | 0 | |
| March | 55°F | 36°F | 31% | 0 | |
| April | 62°F | 42°F | 33% | 15 | |
| May | 73°F | 50°F | 29% | 22 | |
| June | 84°F | 59°F | 17% | 25 | |
| July | 94°F | 68°F | 13% | 0 | |
| August | 92°F | 67°F | 16% | 8 | |
| September | 81°F | 56°F | 18% | 25 | |
| October | 66°F | 44°F | 21% | 20 | |
| November | 51°F | 33°F | 27% | 0 | |
| December | 39°F | 25°F | 31% | 0 |
The working season runs April through June — about 114 workable days a year. The edges are night-limited: label rules want overnight lows of 40°F+, and Salt Lake City's nights only average that from April to October. The Utah table ranks every listed city by the same math.
Midsummer is the trap month in Salt Lake City — 94°F average highs against a 90°F limit. The best-months table is honest about it: June beats July with 25 workable days to 0.
Salt Lake City has a real wet/dry rhythm: January brings rain on 33% of days versus 13% in July. When the calendar gives you a July-side window, the dry-before and dry-after rules nearly take care of themselves.
Flip side of the driveway calendar: sealing in Salt Lake City 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 Salt Lake City Intl Ap, Ut Us, 3.0 km from Salt Lake City's center — your block's shade lines and wind exposure sit on top of that baseline. Scoring details are on the methodology page.
Salt Lake City by the numbers
- Hottest month: July — 94°F average high, 31 days topping 90°F.
- The cold floor is January at 39°F afternoons and 24°F overnight.
- Measurable rain: January leads at 33% of days; July is the quiet end at 13%.
- The 40°F-night season spans April–October here.
- Bottom line for Salt Lake City: roughly 114 workable concrete pouring days a year.
Prep checklist
- Check two nights, not one afternoon: both must hold 40°F+. In Salt Lake City that math works April through June — outside it, 24°F lows own the calendar.
- 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 — Salt Lake City sees rain on 17% of June 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.
- Cure damp: sheeting or misting for days; against a Salt Lake City cold snap, a curing blanket guards the first 48 hours.
- 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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Curing blanket
Holds heat through cold nights in the critical 48 hours.
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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.
FAQ
What temperature is too cold to pour concrete?
For DIY: any low under 40°F within 48 hours of the pour — that's cold-weather concreting (blankets, accelerators, monitoring), not a weekend job. In Salt Lake City, nights average 40°F+ only April–October, which is what actually frames the season above.
Can you pour concrete before rain?
Only with 6+ hours of margin: a 0.1"+ downpour before final set washes cement paste off the finish. After set, rain helps the cure. Salt Lake City's January sees rain 33% of days — keep plastic sheeting cut and weighted at the pour's edge regardless of the forecast.
How long does concrete need to be protected from freezing?
48 hours minimum — that's when early strength forms, and ice inside that window scales the surface and weakens the slab for good. Salt Lake City's freeze risk lives at the season edges: January averages 31 nights under 40°F. Insulated curing blankets are the DIY answer to a surprise cold snap.
Is it OK to pour concrete in hot weather?
The ideal band is 50–85°F; 85–90°F earns a flag and 90°F+ is out. Salt Lake City's July highs average 94°F, so hot-weather tactics (dawn pour, shade, fast finishing) are standard kit in midsummer.
How long before you can drive on new concrete?
About 7 days for a passenger car in Salt Lake City's June conditions (84°F average highs — textbook cure speed); foot traffic after 24–48 hours. Cool weather stretches everything, because cure runs on temperature. Heavy vehicles wait longest, and the bag's schedule outranks any general rule, including this one.
Best season for concrete work in Salt Lake City?
April through june — the months with 40°F+ nights, sub-90°F days, and manageable rain. June leads at 25 workable days; January bottoms out near 0.
Related
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Guides
Climatology: NOAA 1991–2020 normals via SALT LAKE CITY INTL AP, UT US (3.0 km from Salt Lake City center, elevation 4225 ft); live outlook by Open-Meteo.