Temperatures above 40°C scorched the Northern Plains and Northwestern Corn Belt over the weekend while the US and Iran exchanged fresh military strikes and Iran declared the Strait of Hormuz closed again — a convergence of domestic crop stress and geopolitical shock that has opened corn and soybeans sharply higher and pushed wheat to a 7-week high.
Monday's session opens with the grain complex broadly higher, with soybeans up 7 to 11½ cents, corn 4 to 5 cents firmer, and wheat mixed but holding near the 7-week highs established late last week. Two simultaneous premium-injection events over the weekend are driving the morning's price action: a heat event that pushed temperatures above 40°C across portions of the Northern Plains and Northwestern Corn Belt — directly threatening corn and soybeans during the critical mid-July pollination window — and a renewed US-Iran military exchange over the weekend that has pushed WTI crude to $74 and triggered Iran's declaration that the Strait of Hormuz is once again closed. The Don-Azov channel remains halted following Ukrainian missile attacks, compounding the global wheat supply disruption narrative that sent Chicago wheat up 40 cents last week.
Weekend Heat Above 40°C Arrives During Peak Corn Pollination
The temperature event that unfolded over the weekend is precisely the risk the market began pricing the prior week: areas of the Northern Plains and Northwestern Corn Belt experienced heat above 40°C, delivering acute crop stress at the moment of maximum vulnerability in the corn and soybean development calendar. Monday's crop progress update is not expected to reflect the damage yet — ratings data has a one-week lag — but the market does not need to wait for confirmation when the temperature readings are this extreme during pollination. With corn at 16% silking entering last week and three points ahead of the five-year average development pace, a significant portion of the crop is moving through tasseling and silk emergence under this heat event right now. Much-above-normal temperatures combined with no precipitation across the central Midwest, Western Corn Belt, and Plains states means soil moisture is depleting rapidly, and without relief in the immediate days ahead, the yield drag from heat stress during pollination will become measurable in next week's crop condition ratings.
Strait of Hormuz Declared Closed Again; WTI Surges to $74
Iran declared the Strait of Hormuz closed following a weekend exchange of military strikes with the United States, though the Trump administration maintains that the waterway remains open to commercial traffic. WTI crude is up $2.65 at $74, with RBOB up $0.08 and heating oil up $0.14. The reopening of the Hormuz conflict after only days of relative calm confirms that the Iran-US ceasefire framework signed last month has effectively collapsed as a market-stabilising mechanism — traders cannot price a sustainable peace when military strikes resume within weeks of a formal agreement. For grain markets, the crude surge directly benefits soy oil's biodiesel margin, and a broader risk premium re-injection is lifting the entire agricultural commodity space. August soy oil is up 248 to 300 points, with resistance at 72.12 for August, as the energy channel provides the external catalyst that amplifies the domestic weather and demand story.
Don-Azov Channel Remains on Hold After Ukrainian Missile Attacks
Shipments through the Don-Azov channel remain suspended following Ukrainian missile attacks — the same development that arrived late on Friday to amplify that session's wheat close. The Don-Azov channel handles nearly a quarter of Russia's wheat export volumes, and its continued closure into a second trading week means the market cannot treat last week's report as a one-day spike. Every additional day of restricted flow tightens the available Black Sea wheat supply pool at a moment when Russian exports already face competition from lower-priced origins and when the US domestic supply picture — US winter wheat at 990 million bushels, the lowest in 50 years — is providing its own structural floor. CGO September wheat at $6.37½ is down 2¾ cents in morning trade after last week's 7-week high, a modest consolidation rather than a reversal, while KC September at $6.37½ — no specific KC opening quote is available — is down 7 to 8½ cents as the market pauses after a 37¾-cent weekly surge.
China Purchases Another 136,000 MT of US Soybeans; Flash Sales Now Exceed 1 MMT This Week
USDA confirmed another private export sale of 136,000 MT of US soybeans to China for 2026/27 this Monday morning, extending the string of consecutive Chinese purchases that began the prior week. Announced new-crop soybean sales to China and unknown destinations reached 856,000 MT last week alone, and Monday's additional booking brings the cumulative total well above 1 MMT across the past five trading sessions. The sustained pace of Chinese purchases — exceeding one day without a flash sale announcement only once in the past week — is building the foundation for a genuine export acceleration toward the 25 MMT annual target that would require nearly 1 MMT per week from this point forward. August soybeans are at $11.98¾, up $0.07, having briefly traded back above $12.00 before pulling back to just below that level, with major resistance for August at the March high of $12.31 and November resistance at $12.14.
Corn Net Long Flips Back to Positive for First Time Since May; Global Stocks Ratio at Multi-Year Low
CFTC data released Friday confirmed that managed money flipped back to a net long of 12,659 contracts in corn futures and options for the week ending July 7 — the first net long position since the record selling cycle began in late May — via a 58,868-contract swing that was primarily driven by short covering. This repositioning creates a different risk profile for corn entering Monday's heat-driven advance: with the net short exhausted and the position now modestly long, subsequent buying is driven by fresh conviction rather than short-covering mechanics, which historically produces a more durable price move. The global supply context supports that conviction — corn stocks-to-use among major exporting countries fell to 10.8% in the 2025/26 marketing year from 11.5% the prior month, with the 2026/27 forecast declining further to 9.8% from 10.5% — the lowest global corn supply ratio in years, validating the WASDE's 125-million-bushel stocks cut from last Friday.
Soybean Export Inspections More Than Double Year-Ago; Corn Inspections Also Outperform
Weekly export inspections data confirms the demand acceleration that has been building through the summer. Soybean export shipments of 418,592 MT in the week of July 9 were more than double the same week last year, with the marketing year total at 38.29 MMT — still 17.6% below year-ago, but the weekly outperformance is the directional signal the market needs to see sustained. Egypt was the largest buyer at 108,548 MT, with Mexico next at 88,239 MT and China at 65,869 MT. Corn shipments of 1.54 MMT in the same week fell 11.26% from the prior week but were 17.15% above the same week last year, lifting the marketing year total to 72.21 MMT — 24.85% above the same period last year. The split between strong corn marketing-year outperformance and soybeans still running behind year-ago reflects the different stages of each crop's export cycle, but the direction of weekly soybean inspections is now clearly turning positive.
No Precipitation Forecast Across the Core Corn Belt for the Coming Week
NOAA's updated 7-day QPF shows little to no precipitation across a broad swath running from the Dakotas south through Kansas, extending into much of Minnesota, Iowa, Illinois, and Missouri, with only trace totals in Ohio and Indiana. This is the most drought-relevant precipitation forecast the market has seen this growing season — covering the geographic heart of US corn and soybean production with essentially zero moisture during the week that immediately follows 40°C heat damage. Precipitation this week will again favour only the Southern Midwest and Gulf coast region. The high-pressure ridge is expected to shift further west by the end of the week, bringing temperature relief to the Northern Plains and better prospects for rain there, but the Western Corn Belt and central Midwest are likely to remain without meaningful moisture for the critical days ahead. Monday's crop progress update will show steady-to-slightly-lower corn and soybean conditions — the true crop stress from this weekend's heat will surface in next Monday's ratings.
European Heat and Dryness Continues; France Conditions Fall Further
Hot and dry conditions persist across much of central and Western Europe, with French wheat conditions falling a further 3 percentage points to 65% good/excellent as of last week's reading with harvest at only 29% complete — a damaging combination of slow harvest pace and active crop deterioration that keeps EU wheat production estimates under downward revision pressure. Some rain potential exists for Eastern France this week but is not expected to provide meaningful relief with temperatures remaining well above normal. APK-Inform raised Ukraine's 2026 wheat production estimate 0.7 MMT to 22.4 MMT versus the USDA's 24 MMT forecast, a modestly supportive directional revision that still leaves the Ukrainian crop below the USDA's more optimistic projection. Central and Western Europe's continued heat and dryness is the global wheat supply factor most likely to drive further production estimate cuts in the coming weeks, adding to the supply tightening story already reflected in last Friday's WASDE.
Wheat
Sep '26 CBOT SRW wheat is at $6.37½ at Monday's midday, down 2¾ cents from Friday's close of $6.40¼, which was up 20½ cents and capped a 40½-cent weekly gain. KC Sep is down 7 to 8½ cents midday, consolidating after gaining 37¾ cents last week, while MPLS Sep is steady to fractionally lower. The mild midday pullback follows a session that saw CGO September touch a fresh 7-week high before retreating — a consolidation after last week's surge rather than a trend reversal. The managed money Chicago wheat net short was estimated at below 50,000 contracts entering Monday as speculative short covering has accelerated through the prior week, reducing the 62,325-contract net short confirmed in the July 7 CFTC data. The Don-Azov channel shipment halt, the Iran-Hormuz closure, US winter wheat at 990 million bushels, and world wheat stocks at 272.84 MMT collectively sustain the fundamental floor even as prices consolidate.
Corn
Jul '26 CBOT corn is at $4.42 at Monday's midday, up 4 cents, having gapped higher overnight with September reaching $4.45½ and December stretching to $4.68 — both trading to fresh 6-week highs. The CmdtyView national average cash corn price is 4 cents higher at $4.12½. The session's primary driver is the heat event: temperatures above 40°C in the Northern Plains and Northwestern Corn Belt over the weekend, combined with a 7-day forecast showing little to no precipitation across the Dakotas, Minnesota, Iowa, Illinois, and Missouri, directly threatens corn in tasseling and silking phases across the most important producing states. The CFTC's confirmation of a flip to a net long of 12,659 contracts means Monday's buyers are establishing new long positions rather than merely covering shorts — a structurally more constructive signal for the duration of the rally. Global corn stocks-to-use among major exporters at a projected 9.8% for 2026/27 provides the fundamental backdrop that justifies the price level.
Soybeans
Jul '26 CBOT soybeans are at $12.08 at Monday's midday, up 11½ cents, with August at $11.98¾, up $0.07, and November at $11.97, up $0.06¼ — both having briefly traded back above $12.00 before pulling back. The CmdtyView national average cash bean price is up 9½ cents at $11.54¼. August soymeal is down $2.30 while August soy oil is up 248 to 300 points, pushing August oil toward resistance at 72.12 — soy oil driving Monday's rally through the crude and Iran premium, while meal lags in a reversal of last week's meal leadership. Crush margins at $2.95½/bu are recovering further from the $2.29/bu lows. The fresh 136,000 MT Chinese flash sale this morning extends the consecutive-day purchase streak, with the CFTC confirming managed money added 37,479 contracts to the soybean net long in the week of July 7 to reach 68,679 contracts — a level that reflects conviction buying rather than defensive short-covering and sets a higher base for the next round of weather-driven or demand-driven price gains.