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  <xs:element id="wfsl_DebtSecuritiesAvailableForSaleExcludingAccruedInterestMember" abstract="true" name="DebtSecuritiesAvailableForSaleExcludingAccruedInterestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wfsl_HedgedAssetDiscontinuedFairValueHedgeAmount" abstract="false" name="HedgedAssetDiscontinuedFairValueHedgeAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wfsl_InterestRateContractPayFixedReceiveFloatingSwapMember" abstract="true" name="InterestRateContractPayFixedReceiveFloatingSwapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wfsl_InterestIncomeLoansReceivableMember" abstract="true" name="InterestIncomeLoansReceivableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wfsl_InterestIncomeSecuritiesMortgageBackedMember" abstract="true" name="InterestIncomeSecuritiesMortgageBackedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wfsl_InterestExpenseFHLBAdvancesMember" abstract="true" name="InterestExpenseFHLBAdvancesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wfsl_ChangeInUnrealizedGainLossOnFairValueHedgingInstrumentsRelatedToInterestSettlements" abstract="false" name="ChangeInUnrealizedGainLossOnFairValueHedgingInstrumentsRelatedToInterestSettlements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wfsl_ChangeInUnrealizedGainLossOnCashFlowHedgingInstrumentsRelatedToInterestSettlements" abstract="false" name="ChangeInUnrealizedGainLossOnCashFlowHedgingInstrumentsRelatedToInterestSettlements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="wfsl_InterestRateContractReceiveFixedPayFloatingSwapMember" abstract="true" name="InterestRateContractReceiveFixedPayFloatingSwapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wfsl_NoninterestIncomeOtherOperatingIncomeMember" abstract="true" name="NoninterestIncomeOtherOperatingIncomeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="wfsl_RevenueFromContractWithCustomerPercentage" abstract="false" name="RevenueFromContractWithCustomerPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
</xs:schema>
