May 15 (Reuters) - Futures for Canada's main stock index remained subdued on Thursday following a recent rally, amid uncertainty over future trade agreements, with investors also focusing on the U.S. Federal Reserve Chair's speech later in the day.

June futures on the S&P/TSX index .SXFcv1 were down 0.08% at 6:15 a.m. ET (1015 GMT).

Canada's main stock index climbed to a three-month high on Wednesday, but the gains were modest as momentum from recent cooling of trade tensions faded, leaving investors wary amid continued economic uncertainty.

Earlier this week, positive news of a 90-day pause in the U.S.-China tariff dispute, cooler U.S. inflation data and a bunch of investment deals from the Middle East during U.S. President Donald Trump's Gulf tour boosted global stocks.

On Thursday, Trump said the U.S. was getting very close to securing a nuclear deal with Iran, and Tehran had "sort of" agreed to the terms.

Back home, Canadian Finance Minister Francois-Philippe Champagne said on Wednesday the new Liberal government will table an economic update later in the year, implying no annual budget would be presented in the near term.

On the day, investors will be watching Fed Chair Jerome Powell's speech, alongside upcoming U.S. retail sales data and Walmart WMT.N earnings, which could offer a clearer picture of consumer sentiment.

In commodities, gold prices fell to their lowest in more than a month, while oil prices were down by about $2 on expectations for a U.S.-Iran nuclear deal.

Prices of most base metals in London edged lower on Thursday.

In corporate news, Canadian oil and gas producer Strathcona Resources SCR.TO sold its Montney assets for about $2.84 billion and acquired Hardisty Rail Terminal as part of its "core area consolidation" strategy.

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(Reporting by Sanchayaita Roy; Editing by Vijay Kishore)

((Sanchayaita.Roy@thomsonreuters.com;))