Forecasts and growing-season conditions that move the market.

Central Iowa highs sit near 78–80°F today through Friday, then heat ramps fast — 91°F Saturday, 96°F Sunday, 94°F Monday — with overnight lows climbing from the upper 50s into the low 70s. The comfortable window is short.

Central Iowa's NWS forecast shows a comfortable 76°F Friday giving way to a sharp heat surge — 96°F on both Sunday and Monday — before temperatures settle back to 91–92°F Tuesday and Wednesday. Overnight lows stay in the 65–76°F range all week.

Iowa highs hit 89–90°F today through Thursday, then ease to 83–86°F Friday through Monday, with overnight lows in the mid-60s to low 70s. The back half of the week looks noticeably cooler than the front half.

Central Iowa's forecast peaks at 97°F today (Saturday) and 98°F Monday, then steps down through the low 90s midweek and reaches 85°F by Friday — the first real relief from this heat stretch.

Monday, July 27 is the hottest day in the forecast at 97°F. From Saturday through Thursday, every daytime high sits at 92°F or above, with overnight lows mostly in the low 70s — a sustained heat stretch worth watching during late-July corn pollination and soybean pod-set.

Central Iowa's NWS forecast calls for daytime highs of 91°F to 96°F from Thursday through Monday, with overnight lows in the low-to-mid 70s. A slight cool-down arrives Tuesday and Wednesday, with highs near the upper 80s.

Today's 97°F high in central Iowa drops to the low 80s Wednesday through Friday, with overnight lows in the low 60s. Relief is short-lived — Saturday rebounds to 88°F and Sunday jumps back to 94°F.

Monday is the hottest day ahead for Iowa, with a forecast high of 97°F. Temperatures drop quickly after that — down to the low-to-mid 80s by Wednesday — giving corn and soybeans some relief during a critical stretch of the growing season.

Iowa is looking at a prolonged heat run: daytime highs of 92°F to 96°F from Thursday through Monday, with overnight lows mostly in the low-to-mid 70s. Tuesday eases to 87°F. That's five consecutive days above 90°F during peak corn pollination and early soybean pod-set timing.

Iowa's NWS forecast shows daytime highs ranging from 92°F today (July 13) up to 97°F on Friday, with no real break in sight through Sunday, July 20. Overnight lows hold in the 68–75°F range, which limits nighttime cooling for corn and soybeans during a critical stretch of the growing season.

Central Iowa daytime highs start at 89°F today (July 12) and ramp up to 95–96°F from Wednesday through Saturday, with overnight lows mostly in the low-to-mid 70s. That's a sustained heat stretch landing right in the corn pollination window.

Central Iowa daytime highs run 85–90°F through Friday, July 11, with overnight lows in the mid-to-upper 60s. Wednesday, July 8, is the warmest day in the forecast at 90°F.

Iowa highs start around 86–88°F this week and climb to 95°F by Monday, July 13. Overnight lows range from 67°F to 73°F, with the warmest night Monday — meaning less nighttime cooling right when many corn fields may be pollinating.

Iowa's NWS forecast shows daytime highs rising from 88°F today to 94°F by Thursday and Friday, with overnight lows climbing from 65°F to 74°F — a full week of building heat that lines up with corn pollination timing across much of the state.

Iowa daytime highs are forecast to rise from 87°F today (Friday, July 10) to 94°F by Wednesday and Thursday next week, with an overnight low near 68°F tonight. That puts much of the state in sustained heat right during corn pollination timing.

Central Iowa highs are forecast to rise from 84°F on Thursday to 94°F by next Tuesday, with overnight lows in the upper 60s to low 70s. That puts Monday and Tuesday squarely in the 90s during a stretch when many Iowa corn fields could be pollinating.

Central Iowa is looking at a steady stretch of heat from July 3 through July 10, with daytime highs running 86°F to 91°F and nighttime lows between 66°F and 70°F.

Iowa is looking at a full week of heat: today tops out at 96°F, the midweek stretch stays in the low-to-mid 90s, and the weekend eases only slightly to 89°F. Overnight lows hold in the upper 60s to mid-70s. This lands right during the corn pollination window and early soybean bloom — both heat-sensitive stages worth watching closely.

Iowa is looking at a solid week of heat: daytime highs running 88°F to 93°F and overnight lows staying 68°F to 73°F from July 2 through July 9. That kind of sustained warmth lands right in the corn pollination and soybean pod-setting window, making it worth watching closely.

At the Des Moines NWS station as of the morning of June 29, 2026, the temperature sits at 77°F with a dew point of 73.4°F. That gap of less than 4 degrees means the air is nearly saturated — about as muggy as Iowa gets.

Iowa's forecast through June 25 calls for daytime highs between 73°F and 83°F and overnight lows between 56°F and 63°F — warm but not extreme, and right in the range where corn and soybeans can put on steady vegetative growth.

Iowa's forecast through June 18 shows daytime highs ranging from 75°F to 84°F and overnight lows from 55°F to 64°F. No extreme heat or cold stress in the outlook — temperatures sit in a range that supports steady corn and soybean vegetative growth.

As of midday June 4, 2026, the Des Moines NWS station (KDSM) reported 71.6°F with a 57.2°F dew point — comfortable conditions for fieldwork, with light winds and steady pressure.

At 6:15 AM UTC on May 22, 2026, the National Weather Service station at St. Louis (KSTL) reported 64°F (18°C), a 55°F (13°C) dew point, winds near 8 mph (about 13 km/h), and barometric pressure around 30.01 inches of mercury (101,626 Pa). Nothing extreme — just a mild late-May reading for central Missouri.