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Question

What is the best month for Corn?

Short answer

Since 2000, December has been the strongest month for Corn, averaging +5.45% and rising in 85% of 26 years. July has been the weakest, at -3.80%.

We rate the December pattern as strong and the July pattern as moderate. October comes second at +2.77%. A strong month is when prices have tended to rise, not a promise that they will.

Every month, ranked

Corn, 2000 to 2026

+5.5%+2.7%-2.7%-5.5%Jan: average +1.17%, up in 65% of 26 yearsJanFeb: average +1.35%, up in 62% of 26 yearsFebMar: average +1.16%, up in 54% of 26 yearsMarApr: average +1.42%, up in 46% of 26 yearsAprMay: average +0.31%, up in 46% of 26 yearsMayJun: average -2.52%, up in 31% of 26 yearsJunJul: average -3.80%, up in 38% of 26 yearsJulAug: average +0.42%, up in 44% of 27 yearsAugSep: average +1.22%, up in 63% of 27 yearsSepOct: average +2.77%, up in 62% of 26 yearsOctNov: average -0.96%, up in 35% of 26 yearsNovDec: average +5.45%, up in 85% of 26 yearsDec
Corn: average move by month. Solid bars held the same direction in both halves of the sample; faded bars did not.
RankMonthAverageMedianUp yearsPattern
1December+5.45%+3.98%85%strong
2October+2.77%+1.32%62%moderate
3April+1.42%-0.74%46%no clear pattern
4February+1.35%+2.20%62%no clear pattern
5September+1.22%+1.99%63%no clear pattern
6January+1.17%+1.80%65%weak
7March+1.16%+1.20%54%no clear pattern
8August+0.42%-0.54%44%no clear pattern
9May+0.31%-0.51%46%no clear pattern
10November-0.96%-1.09%35%weak
11June-2.52%-4.84%31%moderate
12July-3.80%-4.20%38%moderate

Exact date ranges

Seasonal windows that held in at least 75% of years

Mar 30 to May 4Opens in 174 days
76%higher in 25 years
Average +2.42%Median +1.55%Worst year -9.97%

Likely range of the hit rate 57% to 89%. 2001 to 2012: 75%, 2013 to 2025: 77%.

Jun 8 to Aug 17Opens in 244 days
84%lower in 25 years
Average -8.19%Median -10.79%Worst year +34.30%

Likely range of the hit rate 65% to 94%. 2001 to 2012: 67%, 2013 to 2025: 100%.

Nov 1 to Nov 21Opens in 25 days
76%lower in 25 years
Average -1.25%Median -1.39%Worst year +8.32%

Likely range of the hit rate 57% to 89%. 2001 to 2012: 67%, 2013 to 2025: 85%.

Dec 7 to Dec 17Opens in 61 days
96%higher in 25 years
Average +4.58%Median +2.58%Worst year -3.88%

Likely range of the hit rate 80% to 99%. 2001 to 2012: 92%, 2013 to 2025: 100%.

Why it might happen

  • US planting in spring and pollination weather in July create a weather premium that often fades into harvest.
  • Harvest pressure from September to November, ethanol demand and Brazil's second crop.

Full statistics, technicals and event reactions: Corn. How to read these numbers: guide.

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Not investment advice. Market Seasonality publishes historical statistics, news summaries and scenario analysis for information and education. Past patterns do not guarantee future results. Nothing here is a recommendation to buy, sell or hold any asset, and scenarios describe possible paths without predicting them. See the disclaimer and methodology.