(Updates with U.S. trading, adds analyst quote; changes byline, dateline, previous SYDNEY/PARIS)
CHICAGO, July 21 (Reuters) - U.S. corn and soybean futures fell on Friday, pressured by outlooks for some relief for crops stressed by hot and dry weather during the past few weeks, traders said.
"It is a little bit of a moderation in the weather forecast," said Bill Gentry, a broker at Risk Management Commodities. "The better rain chances definitely put the market on the defensive."
End-of-week profit taking also added pressure following rallies on Thursday that pushed both commodities to their highest in more than a week.
Wheat futures were weaker, with a sell-off in MGEX spring pulling Chicago Board of Trade soft red winter wheat and K.C. hard red winter wheat contracts into negative territory.
Corn notched the biggest decline, sagging 2.0 percent and falling below the key $4 a bushel level.
At 11:31 a.m. CDT (1631 GMT), Chicago Board of Trade December corn futures were down 8 cents at $3.96-3/4 a bushel. CBOT November soybeans were 8-1/2 cents lower at $10.18-1/2 a bushel.
For the week, corn futures have risen 1.9 percent while soybeans were up 1.7 percent.
The latest six-to-ten day outlook boosted the chances for some much needed rain in the central Midwest. But temperatures were expected to remain high, limiting the sell-off in commodities markets.
Recent dry weather has already damaged crops, data from the U.S. Department of Agriculture showed earlier this week.
CBOT September soft red winter wheat was down 1-3/4 cents at $5.04 a bushel, on track for a weekly loss of 1.1 percent. MGEX spring wheat for September delivery was 12-1/2 cents lower at $7.65-1/2 a bushel. It has risen 1.3 percent this week.
K.C. hard red winter wheat for September delivery was 2-1/2 cents lower at $5.01-1/4 a bushel. The contract has dropped 2.3 percent for the week.
Traders said concerns about drought in the U.S. Plains damaging the wheat crops there have already been priced in to the market. (Additional reporting by Colin Packham in Sydney and Sybille de La Hamaide in Paris; Editing by Jane Merriman and Chris Reese)